Electrical Instruments
PHXII03:CURRENT ELECTRICITY

357320 The accurate measurement of emf can be obtained using

1 Multimeter
2 Voltmeter
3 Voltameter
4 Potentiometer
PHXII03:CURRENT ELECTRICITY

357321 With the help of potentiometer, we can determine the value of \(emf\) of a given cell. The sensitivity of the potentiometer is
A. directly proportional to the length of the potentiometer wire.
B. directly proportional to the potential gradient of the wire.
C. inversely proportional to the potential gradient of the wire.
D. inversely proportional to the length of the potentiometer wire.
Choose the correct option for the above statements:

1 A only
2 B and D only
3 A and C only
4 C only
PHXII03:CURRENT ELECTRICITY

357322 \(AB\) is a potentiometer wire, if the value of \(R\) is increased, in which direction will the balance point \(J\) shift?
supporting img

1 Towards right
2 No current flowing in circuit
3 Towards left
4 None of the above
PHXII03:CURRENT ELECTRICITY

357323 In a potentiometer whose wire resistance is \({\rm{10}}\Omega \), the potential fall per \(cm\) is \(V\) volts. To reduce it to V/4 Volt \(c{m^{ - 1}}\), the resistance that must be connected in series with the potentiometer wire is

1 \(40\Omega \)
2 \(30\Omega \)
3 \(20\Omega \)
4 \(10\Omega \)
PHXII03:CURRENT ELECTRICITY

357320 The accurate measurement of emf can be obtained using

1 Multimeter
2 Voltmeter
3 Voltameter
4 Potentiometer
PHXII03:CURRENT ELECTRICITY

357321 With the help of potentiometer, we can determine the value of \(emf\) of a given cell. The sensitivity of the potentiometer is
A. directly proportional to the length of the potentiometer wire.
B. directly proportional to the potential gradient of the wire.
C. inversely proportional to the potential gradient of the wire.
D. inversely proportional to the length of the potentiometer wire.
Choose the correct option for the above statements:

1 A only
2 B and D only
3 A and C only
4 C only
PHXII03:CURRENT ELECTRICITY

357322 \(AB\) is a potentiometer wire, if the value of \(R\) is increased, in which direction will the balance point \(J\) shift?
supporting img

1 Towards right
2 No current flowing in circuit
3 Towards left
4 None of the above
PHXII03:CURRENT ELECTRICITY

357323 In a potentiometer whose wire resistance is \({\rm{10}}\Omega \), the potential fall per \(cm\) is \(V\) volts. To reduce it to V/4 Volt \(c{m^{ - 1}}\), the resistance that must be connected in series with the potentiometer wire is

1 \(40\Omega \)
2 \(30\Omega \)
3 \(20\Omega \)
4 \(10\Omega \)
PHXII03:CURRENT ELECTRICITY

357320 The accurate measurement of emf can be obtained using

1 Multimeter
2 Voltmeter
3 Voltameter
4 Potentiometer
PHXII03:CURRENT ELECTRICITY

357321 With the help of potentiometer, we can determine the value of \(emf\) of a given cell. The sensitivity of the potentiometer is
A. directly proportional to the length of the potentiometer wire.
B. directly proportional to the potential gradient of the wire.
C. inversely proportional to the potential gradient of the wire.
D. inversely proportional to the length of the potentiometer wire.
Choose the correct option for the above statements:

1 A only
2 B and D only
3 A and C only
4 C only
PHXII03:CURRENT ELECTRICITY

357322 \(AB\) is a potentiometer wire, if the value of \(R\) is increased, in which direction will the balance point \(J\) shift?
supporting img

1 Towards right
2 No current flowing in circuit
3 Towards left
4 None of the above
PHXII03:CURRENT ELECTRICITY

357323 In a potentiometer whose wire resistance is \({\rm{10}}\Omega \), the potential fall per \(cm\) is \(V\) volts. To reduce it to V/4 Volt \(c{m^{ - 1}}\), the resistance that must be connected in series with the potentiometer wire is

1 \(40\Omega \)
2 \(30\Omega \)
3 \(20\Omega \)
4 \(10\Omega \)
PHXII03:CURRENT ELECTRICITY

357320 The accurate measurement of emf can be obtained using

1 Multimeter
2 Voltmeter
3 Voltameter
4 Potentiometer
PHXII03:CURRENT ELECTRICITY

357321 With the help of potentiometer, we can determine the value of \(emf\) of a given cell. The sensitivity of the potentiometer is
A. directly proportional to the length of the potentiometer wire.
B. directly proportional to the potential gradient of the wire.
C. inversely proportional to the potential gradient of the wire.
D. inversely proportional to the length of the potentiometer wire.
Choose the correct option for the above statements:

1 A only
2 B and D only
3 A and C only
4 C only
PHXII03:CURRENT ELECTRICITY

357322 \(AB\) is a potentiometer wire, if the value of \(R\) is increased, in which direction will the balance point \(J\) shift?
supporting img

1 Towards right
2 No current flowing in circuit
3 Towards left
4 None of the above
PHXII03:CURRENT ELECTRICITY

357323 In a potentiometer whose wire resistance is \({\rm{10}}\Omega \), the potential fall per \(cm\) is \(V\) volts. To reduce it to V/4 Volt \(c{m^{ - 1}}\), the resistance that must be connected in series with the potentiometer wire is

1 \(40\Omega \)
2 \(30\Omega \)
3 \(20\Omega \)
4 \(10\Omega \)