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A current carrying conductor is placed in a uniform magnetic field parallel to it. The magnetic force experienced by the conductor is _____________________?

August 30, 2021March 19, 2019 by QuizMaster

A current carrying conductor is placed in a uniform magnetic field parallel to it. The magnetic force experienced by the conductor is _____________________?

A. F=1/B
B. F=1/Bsinθ
C. F/0
D. F=1/Bcosθ

If a current carrying solenoid is suspended freely it will__________________?

August 30, 2021March 19, 2019 by QuizMaster

If a current carrying solenoid is suspended freely it will__________________?

A. be rotating
B. come to rest in N-S direction
C. vibrating like galvanometer needle
D. comes to rest after rotation

A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?

August 30, 2021March 19, 2019 by QuizMaster

A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?

A. independent mass m
B. directly proportional to m
C. directly proportional to q
D. directly proportional to B

A wheat stone bridge is said to be balanced when____________________?

August 30, 2021March 19, 2019 by QuizMaster

A wheat stone bridge is said to be balanced when____________________?

A. maximum current flows through the galvanometer branch
B. minimum current flows through the galvanometer branch
C. potential difference across galvanometer branch is maximum
D. potential difference across galvanometer branch is zero

A galvanometer basically is an instrument used to ____________________?

August 30, 2021March 19, 2019 by QuizMaster

A galvanometer basically is an instrument used to ____________________?

A. detect current in a circuit
B. measure current flowing through a circuit
C. measure voltage across a circuit
D. measure potential difference between two points in a circuit

Coil of a galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is always___________________?

August 30, 2021March 19, 2019 by QuizMaster

Coil of a galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is always___________________?

A. BINA cosa
B. BINA sina
C. BINA tana
D. BINA

A sensitive galvanometer gives full-scale deflection with 100 mV. If the resistance of the galvanometer is 50? the maximum current that can flow through safely is__________________?

August 30, 2021March 19, 2019 by QuizMaster

A sensitive galvanometer gives full-scale deflection with 100 mV. If the resistance of the galvanometer is 50? the maximum current that can flow through safely is__________________?

A. 2.0 mA
B. 20 mA
C. 200 mA
D. 0.2 mA

In a multi range ammeter as the range increases _____________________?

August 30, 2021March 19, 2019 by QuizMaster

In a multi range ammeter as the range increases _____________________?

A. shunt value decreases
B. shunt value increases
C. shunt value remains the same
D. none of the above

Which one of the following is not an electromechanical instrument ?

August 30, 2021March 19, 2019 by QuizMaster

Which one of the following is not an electromechanical instrument ?

A. galvanometer
B. voltmeter
C. ammeter
D. AC transformer and DC generator

When the coil of the galvanometer is in equilibrium then the deflecting couple is____________________?

August 30, 2021March 19, 2019 by QuizMaster

When the coil of the galvanometer is in equilibrium then the deflecting couple is____________________?

A. zero
B. equal to the restoring couple
C. greater than the restoring couple
D. smaller than the restoring couple