Question Answers
Sahay Sir > Question Answers
For the potentiometer circuit, shown in the given figure, points X and Y represent the two terminals of an unknown emf E. A student observed that when the jockey is moved from the end A to the end B of the potentiometer wire, the deflection in the galvanometer remains in the same direction. What are the two possible faults in the circuit that could result in this observation? If the galvanometer deflection at the end B is (i) more (ii) less than that at the end A. which of the two faults, listed above, would be there in the circuit? Give reasons in support of your answer in each case.
03
Sep
For the potentiometer circuit, shown in the given figure, points X and Y represent the two terminals of an unknown emf E. A student observed that when the jockey is moved from the end A to the end B of the potentiometer wire, the deflection in the galvanometer remains in the same direction. What are [...]
If a particle moves in a potential energy field U = U0 – ax + bx^2, where a and b are positive constants, obtain an expression for the force actin on it as a function of position. At what point does the force vanish?
03
Sep
If a particle moves in a potential energy field U = U0 – ax + bx^2, where a and b are positive constants, obtain an expression for the force actin on it as a function of position. At what point does the force vanish? If a particle moves in a potential energy field U = [...]
Two resistance R1 = 50 ohm and R2 = 40 ohmA are connected with a battery of emf 5 V and internal resistance 20 ohm as shown in fig, A voltmerter of resistance 1000 ohm is used to measurev the potential difference across R. Find the percentage error made in the reading.
03
Sep
Two resistance R1 = 50 ohm and R2 = 40 ohmA are connected with a battery of emf 5 V and internal resistance 20 ohm as shown in fig, A voltmerter of resistance 1000 ohm is used to measurev the potential difference across R. Find the percentage error made in the reading. A voltmerter of [...]
A particle of mass m is located in a unidimensional potential field where potential energy of the particle depends on the coordinates x as: U(x) = U0(1 – cos Ax); U0 and A are constants. Find the period of small oscillations that the
03
Sep
A particle of mass m is located in a unidimensional potential field where potential energy of the particle depends on the coordinates x as: U(x) = U0(1 – cos Ax); U0 and A are constants. Find the period of small oscillations that the (b) effective spring constant for the simple pendulum. Assume m = mass [...]
In the circuit shown in figure V1 and V2 are two voltmeter of resistances 5000Ω and 3000Ω respectively. In additions R1 = 5000Ω, R2 = 3000ohm and E = 400V then a). Find the reading of voltmeters V1 and V2 when i. switch S is open ii. Switch S is closed b. Current through S, when it is closed.
03
Sep
In the circuit shown in figure V1 and V2 are two voltmeter of resistances 5000Ω and 3000Ω respectively. In additions R1 = 5000Ω, R2 = 3000ohm and E = 400V then a). Find the reading of voltmeters V1 and V2 when i. switch S is open ii. Switch S is closed b. Current through S, [...]
Tags:
In the circuit shown in figure V1 and V2 are two voltmeter of resistances 5000Ω and 3000Ω respectively. In additions R1 = 5000Ω ,
R2 = 3000ohm and E = 400V then a). Find the reading of voltmeters V1 and V2 when i. switch S is open ii. Switch S is closed b. Current through S ,
when it is closed. ,
Find (a) variation of potential energy in the direction of small oscillation of a simple pendulum, (b) effective spring constant for the simple pendulum. Assume m = mass of the bob and l = length of the string of the simple pendulum.
03
Sep
Find (a) variation of potential energy in the direction of small oscillation of a simple pendulum, (b) effective spring constant for the simple pendulum. Assume m = mass of the bob and l = length of the string of the simple pendulum. (b) effective spring constant for the simple pendulum. Assume m = mass of [...]
A particle of mass 0.2 kg executes simple harmonic motion along a path of length 0.2 m at the rate of 600 oscillations per minute. Assume at t = 0 the particle starts SHM in positive direction. Find the kinetic and potential
03
Sep
A particle of mass 0.2 kg executes simple harmonic motion along a path of length 0.2 m at the rate of 600 oscillations per minute. Assume at t = 0 the particle starts SHM in positive direction. Find the kinetic and potential A point particle of mass 0.1 kg is executing SHM with amplitude of [...]
The emf E and the internal resistance r of the battery shown in figure are 6 V and 2.5 Ω respectively. The external resistance R is 25Ω. The resistances of the ammeter and voltmeter are 5.0Ω and 225Ω respectively. (a) Find the readings of the two meters. (b) The switch is thrown to the other side. What will be the readings of the two meters now?
03
Sep
The emf E and the internal resistance r of the battery shown in figure are 6 V and 2.5 Ω respectively. The external resistance R is 25Ω. The resistances of the ammeter and voltmeter are 5.0Ω and 225Ω respectively. (a) Find the readings of the two meters. (b) The switch is thrown to the other [...]
A particle of mass 0.2 kg undergoes SHM according to the equation x(t) = 3 sin (pie t + pie/4). (a) What is the total energy of the particle if potential energy is zero at mean position? (b) what are the kinetic and potential
03
Sep
A particle of mass 0.2 kg undergoes SHM according to the equation x(t) = 3 sin (pie t + pie/4). (a) What is the total energy of the particle if potential energy is zero at mean position? (b) what are the kinetic and potential A point particle of mass 0.1 kg is executing SHM with [...]
A voltmeter of resistance RV and an ammeter of resistance RA are connected as shown in an attempt to measure the resistance R. The measured value of the resistance is RM=VI0 where V is reading of voltmeter and I0 is reading of the ammeter. find the true value of the resistance in terms of RM, RV and RA.
03
Sep
A voltmeter of resistance RV and an ammeter of resistance RA are connected as shown in an attempt to measure the resistance R. The measured value of the resistance is RM=VI0 where V is reading of voltmeter and I0 is reading of the ammeter. find the true value of the resistance in terms of RM, [...]