Explore topic-wise MCQs in Alternating Current and Voltage .

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Alternating Current and Voltage knowledge and support exam preparation. Choose a topic below to get started.

1.

Dividing 24 × 10 11 by 3 × 10 4 equals

A. 8 × 10 4
B. 8 × 10 7
C. 8 × 10 11
D. 8 × 10 15
Answer» C. 8 × 10 11
2.

Adding 27.5 × 10 3 to 8.9 × 10 4 equals

A. 36.4 × 10 7
B. 116.5 × 10 4
C. 28.39 × 10 3
D. 1.165 × 10 5
Answer» E.
3.

Which of the following metric prefixes could replace 10 –9 ?

A. Nano
B. Mega
C. Kilo
D. Micro
Answer» B. Mega
4.

Current is measured in

A. watts
B. volts
C. henries
D. amperes
Answer» E.
5.

The quantity 43 × 10 -3 is the same as

A. 0.043
B. 0.430
C. 430
D. 43,000
Answer» B. 0.430
6.

The number of megohms in 0.03 kilohms is

A. 0.00002 M
B. 0.0002 M
C. 3 × 10 –5 M
D. either 0.00002 M or 0.0002 M
Answer» D. either 0.00002 M or 0.0002 M
7.

The number 0.0003 multiplied by 10 -3 is

A. 0.0000003
B. 0.0003
C. 3
D. 3,000
Answer» B. 0.0003
8.

The number 4.38 × 10 –3 expressed as a number having a power of 10 –6 is

A. 4,380 × 10 –6
B. 438 × 10 –6
C. 43,800 × 10 –6
D. 438,000 × 10 –6
Answer» B. 438 × 10 –6
9.

What is (79 × 10 6 )/(12 × 10 –8 )?

A. 6,580 × 10 12
B. 658 × 10 10
C. 6.58 × 10 14
D. 0.658 × 10 16
Answer» D. 0.658 × 10 16
10.

Seven thousand volts can be expressed as

A. 7 kV
B. 7 MV
C. 7 mV
D. either 7 kV or 7 mV
Answer» B. 7 MV
11.

The quantity 3.3 × 10 3 is the same as

A. 330
B. 3,300
C. 33,000
D. 0.0033
Answer» C. 33,000
12.

When these numbers are added, (87 × 10 5 ) + (2.5 × 10 6 ), the result is

A. 1.12 × 10 4
B. 11.2 × 10 5
C. 112 × 10 5
D. 1,120 × 10 6
Answer» D. 1,120 × 10 6
13.

The number 3.2 × 10 –5 A expressed using a metric prefix is

A. 32 µA
B. 3.3 µA
C. 320 mA
D. 3,200 mA
Answer» B. 3.3 µA
14.

The number 4.4 × 10 6 ohms expressed using a metric prefix is

A. 4 k
B. 4.4 k
C. 4 M
D. 4.4 M
Answer» E.
15.

When these numbers are multiplied, (6 × 10 3 ) (5 × 10 5 ), the result is

A. 3 × 10 8
B. 30 × 10 8
C. 300 × 10 9
D. 3,000 × 10 7
Answer» C. 300 × 10 9