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An electric kettle of 1200Whas 1 kg water at 20∘C. The water equivalent of the kettle is 500g. The time required to heat water from 20∘→100∘C will be (specific heat of water = 4200J/kg∘C).
06
Dec
An electric kettle of 1200Whas 1 kg water at 20∘C. The water equivalent of the kettle is 500g. The time required to heat water from 20∘→100∘C will be (specific heat of water = 4200J/kg∘C). An electric kettle of 1200Whas 1 kg water at 20∘C. The water equivalent of the kettle is 500g. The time required [...]
A 500 W heating unit is designed to operate on a 115 V line. If line voltage drops to 110 V , the percentage drop in heat output will be:
06
Dec
A 500 W heating unit is designed to operate on a 115 V line. If line voltage drops to 110 V , the percentage drop in heat output will be: A 500 W heating unit is designed to operate on a 115 V line. If line voltage drops to 110 V the percentage drop in [...]
Consider a system of three charges 3/q, 3/q and − 3/2q placed at points A, B and C, respectively, as shown in the figure. Take O to be the centre of the circle of radius R and angle CAB = 60^o
06
Dec
Consider a system of three charges 3/q, 3/q and − 3/2q placed at points A, B and C, respectively, as shown in the figure. Take O to be the centre of the circle of radius R and angle CAB = 60^o 3/q and − 3/2q placed at points A as shown in the figure. Take [...]
Charges +q, -q, +q, and -q are placed at the corner A, B, C and D respectively of a square of a side a. The potential energy of the system is 1/4pie€0 times
06
Dec
Charges +q, -q, +q, and -q are placed at the corner A, B, C and D respectively of a square of a side a. The potential energy of the system is 1/4pie€0 times -q and -q are placed at the corner A B C and D respectively of a square of a side a. The [...]
Two resistors of 500Ω and 300Ω are connected in series with a battery of emf 20V.A voltmeter of resistance 500Ω is used to measure the p.d across the 500Ω resistor. The error in the measurement is.
06
Dec
Two resistors of 500Ω and 300Ω are connected in series with a battery of emf 20V.A voltmeter of resistance 500Ω is used to measure the p.d across the 500Ω resistor. The error in the measurement is. Two resistors of 500Ω and 300Ω are connected in series with a battery of emf 20V.A voltmeter of resistance [...]
The p.d. across the resistance of 400 ohm as will be measured by the voltmeter V of resistance 400 ohm
06
Dec
The p.d. across the resistance of 400 ohm as will be measured by the voltmeter V of resistance 400 ohm The p.d. across the resistance of 400 ohm as will be measured by the voltmeter V of resistance 400 ohm December 6, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity [...]
Two cells of equal emf and internal resistance r1 and r2 (r1 > r2) are connected in series. on connecting this combination to an external resistance R, it is observed that the potential difference across the first cell becomes zero. The value of R will be
06
Dec
Two cells of equal emf and internal resistance r1 and r2 (r1 > r2) are connected in series. on connecting this combination to an external resistance R, it is observed that the potential difference across the first cell becomes zero. The value of R will be it is observed that the potential difference across the [...]
By inserting a dielectric material between the plates of a parallel plate condenser, the energy is increased five time. The dielectric constant of the material is
06
Dec
By inserting a dielectric material between the plates of a parallel plate condenser, the energy is increased five time. The dielectric constant of the material is By inserting a dielectric material between the plates of a parallel plate condenser the energy is increased five time. The dielectric constant of the material is December 6, 2020 [...]
In an electric circuit containing a battery, the charge (assumed positive )inside the battery.
06
Dec
In an electric circuit containing a battery, the charge (assumed positive )inside the battery. In an electric circuit containing a battery the charge (assumed positive )inside the battery. December 6, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 ,
A parallel plate capacitor of plate area A and plate separation d is charged to potential difference V and then the battery is disconnected. A slab of dielectric constant K is then inserted between the plates of the capacitor so as to fill the space between the plates. If Q, E and W denote respectively, the magnitude of charge on each plate, the electric field between the plates (after the slab is inserted), and work done on the system, in question, in the process of inserting the slab, then which one of the following is incorrect ?
06
Dec
A parallel plate capacitor of plate area A and plate separation d is charged to potential difference V and then the battery is disconnected. A slab of dielectric constant K is then inserted between the plates of the capacitor so as to fill the space between the plates. If Q, E and W denote respectively, [...]