Test Your Basic Electricity Knowledge Here In This Quiz
15 Questions |
By Jagranjosh | Last updated: Jun 8, 2018
| Total Attempts: 6530
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Questions and Answers
1.
The potential difference across the 3 Ω resistor is:
A.
1/9 V
B.
1/2 V
C.
2V
D.
1V
2.
Two electric bulbs have resistances in the ratio 1:2. If they are joined in series, the energy consumed in them is in the ratio.
A.
2:1
B.
1:2
C.
4:1
D.
1:1
3.
You are given four ammeters A, B, C and D having least counts mentioned below:
(I) Ammeter A with least count 0.25 A
(II) Ammeter B with least count 0.5 A
(III) Ammeter C with least count 0.05 A
(IV) Ammeter D with least count 0.1 A
Which of the ammeters would you prefer for doing an experiment to determine the equivalent resistance of two resistances most accurately, when connected in parallel?
A.
Ammeter A
B.
Ammeter B
C.
Ammeter C
D.
Ammeter D
4.
If in the given arrangement, the three resistors are replaced by a single resistor; then its resistance will be:
A.
4Ω
B.
6Ω
C.
9Ω
D.
18Ω
5.
If the current flowing through a fixed resistor is halved, the heat produced in it will become:
A.
One-fourth
B.
One-half
C.
Double
D.
Four times
6.
What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?
A.
30 A
B.
0.3 A
C.
0.5 A
D.
5 A
7.
A wire of resistance R_{1} is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R_{2}, then the ratio R_{1}/ R_{2} is:
A.
1/25
B.
1/5
C.
5
D.
25
8.
At a given time, a house is supplied with 100 A at 220 V. how many 75 W, 220 V light bulbs could be switched on in the house at the same time (if they are all connected in parallel)?
A.
93
B.
193
C.
293
D.
393
9.
Keeping the potential difference constant, the resistance of the circuit is halved. The current will become:
A.
One-fourth
B.
Four times
C.
Half
D.
Double
10.
When a 4 Ω resistor is connected across the terminals of a battery, the number of coulombs passing through the resistor per second is:
A.
0.3
B.
3
C.
4
D.
12
11.
An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
A.
0.92 A
B.
2.9 A
C.
9.2 A
D.
92 A
12.
Two bulbs marked 200 watt-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is
A.
33 watt
B.
67 watt
C.
100 watt
D.
300 watt
13.
When a current 'I' flows through a resistance 'R' for time 't' the electrical energy spent is given by
A.
IRt
B.
I^{2}Rt
C.
IR^{2}t
D.
I^{2}R/t
14.
In the figure,
A.
6 W, 3 W and 9 W are in series
B.
9 W and 6 W are in parallel and the combination is in series with 3 W
C.
3 W, 6 W and W are in parallel
D.
3 W, 6 W are in parallel and 9 W is in series
15.
V_{1}, V_{2} and V_{3} are the potential differences across the 1Ω, 2Ω and 3Ω resistors in the following diagram, and the current is 5A.
Which of the following shows the correct values of V_{1}, V_{2} and V_{3} measured in volts?
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