An open resistor, when checked with an ohm-meter reads_____________?
An open resistor, when checked with an ohm-meter reads_____________?
A. zero
B. infinite
C. high but within tolerance
D. low but not zero
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Switching of a lamp in house produces noise in the radio. This is because switching operation produces________?
Switching of a lamp in house produces noise in the radio. This is because switching operation produces________?
A. arcs across separating contacts
B. mechanical noise of high intensity
C. both mechanical noise and arc between contacts
D. none of the aboveA thermistor has_____________?
A thermistor has_____________?
A. positive temperature coefficient
B. negative temperature coefficient
C. zero temperature coefficient
D. variable temperature coefficientA resistance having rating 10 ohms, 10 W is likely to be a__________?
A resistance having rating 10 ohms, 10 W is likely to be a__________?
A. metallic resistor
B. carbon resistor
C. wire wound resistor
D. variable resistorWith rise in temperature the resistance of semi-conductors_________________?
With rise in temperature the resistance of semi-conductors_________________?
A. decreases
B. increases
C. first increases and then decreases
D. remains constantInternal resistance of ideal voltage source is ?
Internal resistance of ideal voltage source is ?
A. zero
B. infinite
C. finite
D. 100 ohmsInternal resistance of ideal voltage source is
When one leg of parallel circuit is opened out the total current will______________?
When one leg of parallel circuit is opened out the total current will______________?
A. reduce
B. increase
C. decrease
D. become zero