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TOPIC NAME:- OHM'S LAW (BY-N..K. RATHOD WIREMAN INSRUCTOR)- MCQ-3

1) The ratio of voltage and electrical current in a closed circuit:

3 points

A) Remains Constant

B) Varies Linearly

C) Varies Exponentially

D) Varies in terms of cube of the ratio

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2) In an electrical circuit, what happens to the current flowing through the wire if the voltage is reduced to the half and resistance of the wire is doubled:

3 points

A) Double

B) Four times

C) Half

D) A Quarter

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3) A Circuit supplied with 110V carries 5 Amps Current. Calculate the Resistance value of the circuit

3 points

A) 11 ohms

B) 550 ohms

C) 55 ohms

D) 5.5 ohms

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4) Calculate the Resistance value in a closed circuit supplied with 110V and power consumed in the circuit is 100 watts:

3 points

A) 11 ohms

B) 60.5 ohms

C) 1.1 ohms

D) 121 ohms

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5) Calculate the Power in a circuit having a resistance value of 10 ohms and the current flowing through the circuit is 5 Amps.

3 points

A) 250 watts

B) 500 watts

C) 2.5 watts

D) 20 watts

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6) Which of the following curve represents Ohm’s Law:

3 points

A) Parabolic

B) Linear

C) Hyperbolic

D) Sine wave

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7) f the voltage across a resistor ___, the current flowing through it will increase.

3 points

A) increases

B) decreases

C)stays the same

D) Not enough information

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8) The voltage across a ___ resistor is 12 V and the current through it is 500 mu.gifA.

3 points

A) 600 ohms

B) 2.4 ohms

C.) 6 ohms

D) 24 ohms

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9) The voltage supplying the current in the given circuit is _____.

3 points

A) 2.5 V

B) 25 V

C) 250V

D) 2.5 KV

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10) The voltage across a 2.2 komega.gif resistor is ___ if 3 mA of current is flowing through it.

3 points

A) 6.6 V

B) 7.33 V

C)1.4 V

D) 0.8 V

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11) The ___ rating of a resistor will increase with an increase in the surface area of the resistor.

3 points

A) resistance

B) current

C) power

D) voltage

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12) The number of joules used in 1 second is always equal to the number of _______.

3 points

A) siemens

B) coulombs

C)amperes

D) watts

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13) The power is ___ if 200 J of energy are used in 10 s.

3 points

A) 2 W

B) 5 W

C) 20 W

D) 50 W

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14) Resistance and current are _________.

3 points

A) directly proportional

B) inversely proportional

C) not related

D) similar to voltage

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15) ___ is a better way of expressing 7,500,000 W.

3 points

A) 7.5 kW

B)7,500 MW

C)7,500 GW

D) 7.5 MW

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16) The current is ___ if the voltage across a 5 komega.gif resistor is 25 V.

3 points

A) 200 mA

B) 125 mA

C) 75 mA

D) 5 mA

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17) How much current is produced by a voltage of 18 kV across a 15 kΩ resistance?

3 points

A) 2 A

B) 12 A

C) 120 mA

D) 12 mA

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18) What is the approximate filament resistance of a light bulb if it operates from a 110 V source and 0.6 A of current is flowing?

3 points

A) 183 Ω

B) 18.3 Ω

C) 66 Ω

D) 6.6 Ω

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19) Four amperes of current are measured through a 24 Ω resistor connected across a voltage source. How much voltage does the source produce?

3 points

A) 960 V

B) 9.6 V

C) 96 V

D) 8 V

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20) If you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be?

3 points

A) 8 V

B) 320 V

C) 3.2 V

D) 32 V

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