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Electronics & Communication Engineering - Basic Electronics

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55.

The rate at which work is performed is called

A.	current	B.	energy
C.	power	D.	voltage

56.

A battery's capacity to deliver power is measured in

A.	kWh	B.	Ah
C.	Wh	D.	Vh

57.

Power supplies are regulated to prevent the output voltage from changing due to changes in the

A.	line voltage	B.	supply load
C.	frequency	D.	both line voltage and supply load

58.

If current through a resistance is halved

A.	the resistance is halved	B.	the voltage is halved
C.	the voltage doubles	D.	none of the above

59.

Ohm's law is a relationship between

A.	voltage, current, and time	B.	power, current, and resistance
C.	resistance, time, and current	D.	voltage, current, and resistance

60.

One of the most common applications of a potentiometer is as an adjustable voltage divider, also known as

A.	voltage control	B.	current control
C.	volume control	D.	divider control

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