Current Electricity! Play This Trivia Quiz
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.JPG "Current Electricity! Play This Trivia Quiz")
Electricity is a form of energy that is obtained from mechanical, solar just to mention but a few of the many energy sources. The electricity moves in currents through wires. The quiz below is this subject. All the best.
- 1.Given three resistors, how many different combinations of these three resistances can be made
- A.
Three
- B.
Four
- C.
Five
- D.
Six
- 2.
- A.
Zero
- B.
1.6 ⤬ 10–19 A
- C.
1.07 ⤬ 10–3 A
- D.
0.17 A
- 3.The temperature (T) dependence of resistivity (p) of a semiconductor is represented by
- A.
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- B.
![]()
- C.
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- D.
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- 4.Resistance n, each of r Ω, when connected in parallel give an equivalent resistance of R Ω. If these resistances were connected in series, the combination would have a resistance in Ω, equal to
- A.
N2R
- B.
R / n2
- C.
R / n
- D.
NR
- 5.
![The current in the arm CD of the circuit will be
- ProProfs]( "The current in the arm CD of the circuit will be")
The current in the arm CD of the circuit will be- A.
I1 + i2
- B.
I2 + I3
- C.
I1 + i3
- D.
I1 – i2 + i3
- 6.
![The bulbs A, B and C are connected as shown in Figure. The bulbs B and C are identical. If the bulb C is fused,
- ProProfs]( "The bulbs A, B and C are connected as shown in Figure. The bulbs B and C are identical. If the bulb C is fused,")
- A.
Both A and B will glow more brighty,
- B.
Both A and B will glow less brightly,
- C.
A will glow less brightly and B will glow more brightly,
- D.
A will glow more brightly and B will glow less brightly.
- 7.If R1 and R2 are the filament resistances of 200 watt and a 100 watt bulb respectively, both designed to run at the same voltage, then
- A.
R1 is four times R2
- B.
R2 is four times R1
- C.
R1 is two times 3R2
- D.
R2 is two times R1
- 8.If a high power heater is connected to electric mains, then the bulbs in the house become dim, because there is a
- A.
Current drop
- B.
Potential drop
- C.
No current drop
- D.
No potential drop
- 9.A house wiring supplied with a 220 V supply line is protected by a 6 ampere fuse. The maximum number of 60 W bulbs is parallel that can be turned on is
- A.
11
- B.
22
- C.
33
- D.
66
- 10.An electric heating element consumes 500 W, when connected to a 100 V line. If the line voltage becomes 150V, the power consumed will be:
- A.
500 W
- B.
750 W
- C.
1000 W
- D.
1125 W
- 11.
![A 100 W bulb B1 and two 60 W bulb B2 and B3 are connected to a 250V source as shown in the Figure. Now W1, W2 and W3 are the output powers of the bulbs B1, B2 and B3 respectively. Then
- ProProfs]( "A 100 W bulb B1 and two 60 W bulb B2 and B3 are connected to a 250V source as shown in the Figure. Now W1, W2 and W3 are the output powers of the bulbs B1, B2 and B3 respectively. Then")
A 100 W bulb B1 and two 60 W bulb B2 and B3 are connected to a 250V source as shown in the Figure. Now W1, W2 and W3 are the output powers of the bulbs B1, B2 and B3 respectively. Then- A.
W1 > W2 = W3
- B.
W1 < W2 = W3
- C.
W1 < W2 < W3
- D.
W1 > W2 = W3
- 12.
![In a copper voltameter, mass deposited in thirty seconds is m grams. If the time current graph is as shown in figure. E.C.E. of copper is (current in milli ampere)
- ProProfs]( "In a copper voltameter, mass deposited in thirty seconds is m grams. If the time current graph is as shown in figure. E.C.E. of copper is (current in milli ampere)")
In a copper voltameter, mass deposited in thirty seconds is m grams. If the time current graph is as shown in figure. E.C.E. of copper is (current in milli ampere)- A.
0.1 m
- B.
0.5 m
- C.
0.6 m
- D.
M
- 13.Consider the following two statements (i) Free-electro density is different in different metals. (ii) Free-electro density in a metal depends on temperature. Seebeck effect is caused
- A.
Due to (i) but not due to (ii)
- B.
Due to (ii) but not due (i)
- C.
Due to both (i) and (ii)
- D.
Neither due to (i) nor due to (ii)
- 14.If the electric current in a lamp decreases by 5 %, then the power output decreases by:
- A.
2.5%
- B.
5%
- C.
10%
- D.
20%
- 15.The thermo e.m.f. of a thermo couple varies with the temperature of the hot junction as E = a 𝜃 + b 𝜃2 in bolts where the ratio a/b is 700°C. If the cold temperature is kept at 0°C, then the neutral temperature is
- A.
700°C
- B.
350°C
- C.
1400°C
- D.
No neutral temperature is possible for this thermocouple
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.JPG "The bulbs A, B and C are connected as shown in Figure. The bulbs B and C are identical. If the bulb C is fused,")
.JPG "A 100 W bulb B1 and two 60 W bulb B2 and B3 are connected to a 250V source as shown in the Figure. Now W1, W2 and W3 are the output powers of the bulbs B1, B2 and B3 respectively. Then")
.JPG "In a copper voltameter, mass deposited in thirty seconds is m grams. If the time current graph is as shown in figure. E.C.E. of copper is (current in milli ampere)")
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