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Two wires of same mass , having ratio of lengths 1:2, density 1:3, and respectively 2:1, are connected one by one to the same volltage supply. The rate of heat dissipation in the wire is found to be 10 W. Find the rate of heat dissipation in the second wire.
03
Sep
Two wires of same mass , having ratio of lengths 1:2, density 1:3, and respectively 2:1, are connected one by one to the same volltage supply. The rate of heat dissipation in the wire is found to be 10 W. Find the rate of heat dissipation in the second wire. and respectively 2:1 are connected [...]
A dry cell of emf 1.5 V and internal resistance 0.10 Ω is connected across a resistor in series with a very low resistance ammeter. When the circuit is switched on , the ammeter reading settles to a steady value of 2.0A. (i) What is the steady rate of chemical energy consumption of the cell ? What is the steady rate of energy dissipation inside the cell ? (ii) What is the steady rate of energy dissipation inside the cell ? (ii) What is the steady rate of energy dissipation inside the resistor ? (iv) What is the steady power out put of the source?
03
Sep
A dry cell of emf 1.5 V and internal resistance 0.10 Ω is connected across a resistor in series with a very low resistance ammeter. When the circuit is switched on , the ammeter reading settles to a steady value of 2.0A. (i) What is the steady rate of chemical energy consumption of the cell [...]
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A dry cell of emf 1.5 V and internal resistance 0.10 Ω is connected across a resistor in series with a very low resistance ammeter. When the circuit is switched on ,
A series battery by 6 lead accumulators each of emf 2.0 V and internal resistance 0.5Ω is charged by a 20V d.c. supply ,
circuit in order to limit the current to 1A. Calculate the power supplied by the source and the fraction of energy stored in the battery in 15 min. ,
What series resistance should be used in the charging ,
A series battery by 6 lead accumulators each of emf 2.0 V and internal resistance 0.5Ω is charged by a 20V d.c. supply, What series resistance should be used in the charging, circuit in order to limit the current to 1A. Calculate the power supplied by the source and the fraction of energy stored in the battery in 15 min.
03
Sep
A series battery by 6 lead accumulators each of emf 2.0 V and internal resistance 0.5Ω is charged by a 20V d.c. supply, What series resistance should be used in the charging, circuit in order to limit the current to 1A. Calculate the power supplied by the source and the fraction of energy stored in [...]
Tags:
A series battery by 6 lead accumulators each of emf 2.0 V and internal resistance 0.5Ω is charged by a 20V d.c. supply ,
circuit in order to limit the current to 1A. Calculate the power supplied by the source and the fraction of energy stored in the battery in 15 min. ,
What series resistance should be used in the charging ,
An unknown resistance X is to be determined using resistances R1, R2 or R3. Their corresponding null points are A, B and C. Find which of the above will give the most accurate reading and why?
03
Sep
An unknown resistance X is to be determined using resistances R1, R2 or R3. Their corresponding null points are A, B and C. Find which of the above will give the most accurate reading and why? An unknown resistance X is to be determined using resistances R1 B and C. Find which of the above [...]
In the circuit shown in the figure, cell is ideal and R2 = 100Ω. A voltmeter of internal resistance 200Ω reads V12=4VandV23=6V between the pair of points 1−2 and 2−3 respectively. What will be the reading of the voltmeter between the points 1−3.
03
Sep
In the circuit shown in the figure, cell is ideal and R2 = 100Ω. A voltmeter of internal resistance 200Ω reads V12=4VandV23=6V between the pair of points 1−2 and 2−3 respectively. What will be the reading of the voltmeter between the points 1−3. AB is a uniform wire of length L=100 cm. A cell of [...]
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AB is a uniform wire of length L=100 cm. A cell of emf V0 = 12 volt is connected across AB. A resistance R ,
as shown ,
In the circuit shown in figure AB is a uniform wire of length L = 5 m. It has a resistance of 2Ω/m. When AC=2.0 m ,
In the circuit shown in the figure: ,
it was found that the galvanometer shows zero reading when switch s is placed in either of the two positions 1 or 2. find the emf E1. ,
R2=2kΩandR3=5kΩ have been connected to a constant current source as shown in figure. The current source supplies current I=2mA to the circuit. A voltmeter with RV=6kΩ internal resistance is connected ,
Three resistors R1=3kΩ ,
AB is a uniform wire of length L=100 cm. A cell of emf V0 = 12 volt is connected across AB. A resistance R, cell of emf V and a milliammeter (which can show deflection in both directions] is connected to the circuit as shown. Contact C can be slid on the wire AB. Distance AC=x. The current (I) through the milliammeter is taken positive when the cell of emf V is discharging. A graph of IVsx has been shown. Neglect internal resistance of the cells. (a) Find V (b) Find R (c) find I when x=100 cm
03
Sep
AB is a uniform wire of length L=100 cm. A cell of emf V0 = 12 volt is connected across AB. A resistance R, cell of emf V and a milliammeter (which can show deflection in both directions] is connected to the circuit as shown. Contact C can be slid on the wire AB. Distance [...]
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AB is a uniform wire of length L=100 cm. A cell of emf V0 = 12 volt is connected across AB. A resistance R ,
as shown ,
In the circuit shown in figure AB is a uniform wire of length L = 5 m. It has a resistance of 2Ω/m. When AC=2.0 m ,
In the circuit shown in the figure: ,
it was found that the galvanometer shows zero reading when switch s is placed in either of the two positions 1 or 2. find the emf E1. ,
R2=2kΩandR3=5kΩ have been connected to a constant current source as shown in figure. The current source supplies current I=2mA to the circuit. A voltmeter with RV=6kΩ internal resistance is connected ,
Three resistors R1=3kΩ ,
Three resistors R1=3kΩ,R2=2kΩandR3=5kΩ have been connected to a constant current source as shown in figure. The current source supplies current I=2mA to the circuit. A voltmeter with RV=6kΩ internal resistance is connected, as shown, to measure the potential difference across R1. (a) Find the percentage error in the measurement of potential difference (V1) across. R1 caused due to finite resistance of the voltmeter. (b) If positions of R2andR3 are interchanged will the percentage error in measurement of V1 increase or decrease ?
03
Sep
Three resistors R1=3kΩ,R2=2kΩandR3=5kΩ have been connected to a constant current source as shown in figure. The current source supplies current I=2mA to the circuit. A voltmeter with RV=6kΩ internal resistance is connected, as shown, to measure the potential difference across R1. (a) Find the percentage error in the measurement of potential difference (V1) across. R1 [...]
Tags:
as shown ,
In the circuit shown in figure AB is a uniform wire of length L = 5 m. It has a resistance of 2Ω/m. When AC=2.0 m ,
In the circuit shown in the figure: ,
it was found that the galvanometer shows zero reading when switch s is placed in either of the two positions 1 or 2. find the emf E1. ,
R2=2kΩandR3=5kΩ have been connected to a constant current source as shown in figure. The current source supplies current I=2mA to the circuit. A voltmeter with RV=6kΩ internal resistance is connected ,
Three resistors R1=3kΩ ,
A fuse F1 is connected across a source of variable voltage and the voltage is increased gradually. The fuse blows out just when the reading of the voltmeter and ammeter reaches 1.0Vand1.0A respectively (see figure (i)). The experiment is repeated with another fuse F2 and the reading of the voltmeter and ammeter when it blows out is 2.4Vand1.2A respectively. (a) The two fuses are connected in parallel as shown in figure (ii). Voltage is increased gradually. find the reading of the ammeter when any one of the fuses blows out. (b) The two fuses are connected in series as shown in figure (iii). find the reading of the voltmeter at the point one of the fuses blows out.
03
Sep
A fuse F1 is connected across a source of variable voltage and the voltage is increased gradually. The fuse blows out just when the reading of the voltmeter and ammeter reaches 1.0Vand1.0A respectively (see figure (i)). The experiment is repeated with another fuse F2 and the reading of the voltmeter and ammeter when it blows [...]
In the circuit shown in fig a current I = 150 mA enters through A and leaves through B. Reading of the identical voltmeters V1 and V2 are 20 V and 30 V respectively. Find the magnitude of resistance R.
03
Sep
In the circuit shown in fig a current I = 150 mA enters through A and leaves through B. Reading of the identical voltmeters V1 and V2 are 20 V and 30 V respectively. Find the magnitude of resistance R. In the circuit shown in figure AB is a uniform wire of length L = [...]
A solid cylinder is attached to a massless spring so that it can roll without slipping along a horizontal surface. Calculate the period of oscillation made by the cylinder if m = mass of cylinder and k = spring constant.
03
Sep
A solid cylinder is attached to a massless spring so that it can roll without slipping along a horizontal surface. Calculate the period of oscillation made by the cylinder if m = mass of cylinder and k = spring constant. A uniform disc of radius 5.0 cm and mass 200 g is fixed at its [...]