The Force Between Two Parallel Currents Carrying Conductors-Definition of Ampere NEET Questions

Physics - Magnetic Effects of Current and Magnetism

The Force Between Two Parallel Currents Carrying Conductors-Definition of Ampere MCQ Questions


13.
Two parallel wires, 10 cm apart, carry currents 5 A and 10 A in same direction. Force per unit length on each wire is:
A.
1 × 10⁻⁵ N/m
B.
2 × 10⁻⁴ N/m
C.
5 × 10⁻⁵ N/m
D.
1 × 10⁻⁴ N/m
😑 View Answer Rough Work Error
ANSWER :
D. 1 × 10⁻⁴ N/m
14.
Coulomb is defined in terms of ampere as:
A.
1 C = 1 A × 1 m
B.
1 C = 1 A / 1 s
C.
1 C = 1 A × 1 V
D.
1 C = 1 A × 1 s
😑 View Answer Rough Work Error
ANSWER :
D. 1 C = 1 A × 1 s
15.
The force between two parallel current-carrying wires is used to define:
A.
Volt
B.
Weber
C.
Ohm
D.
Ampere
😑 View Answer Rough Work Error
ANSWER :
D. Ampere
16.
An instrument used to measure the force between parallel wires and verify the ampere definition is:
A.
Potentiometer
B.
Current balance
C.
Galvanometer
D.
Voltmeter
😑 View Answer Rough Work Error
ANSWER :
B. Current balance
17.
Why is the effect of Earth's magnetic field to be eliminated when defining ampere using parallel wires?
A.
Earth's field is variable
B.
None of these
C.
Earth's field can produce additional forces larger than 2 × 10⁻⁷ N/m
D.
Earth's field affects wire direction
😑 View Answer Rough Work Error
ANSWER :
C. Earth's field can produce additional forces larger than 2 × 10⁻⁷ N/m
18.
Two parallel wires carry equal currents 1 A each and are 2 m apart. Force per unit length is:
A.
10⁻⁷ N/m
B.
2 × 10⁻⁷ N/m
C.
10⁻⁶ N/m
D.
4 × 10⁻⁷ N/m
😑 View Answer Rough Work Error
ANSWER :
A. 10⁻⁷ N/m