What exactly a short circuit means? Choose the correct alternative from the following.

The positive and negative terminals of a battery come in contact without the presence of a resistance in between.

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The positive and earth terminals of a battery come in contact with the presence of a resistance in between.

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Live and neutral wires from the mains come in contact with each other without the presence of a resistance in between.

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The positive and earth terminals of a battery come in contact in the presence of a resistance between them.

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Solution

The correct options are
A The positive and negative terminals of a battery come in contact without the presence of a resistance in between.
C Live and neutral wires from the mains come in contact with each other without the presence of a resistance in between.
When the positive and negative terminals of a battery or live and neutral wires from the mains come in contact without the presence of a resistance in between this phenomenon is callled as short circuit. Current from positive or live wire passes to negative or neutral wire without any resistance therefore a large current flows thereby damaging the circuit.

Suggest Corrections

Similar questions

Select the most appropriate option:

Statement 1: During a short circuit, two wires come in contact without the presence of resistance in between and a large amount of current flows through the circuit.

Statement 2: In case of overloading many devices are connected to the same circuit and hence a low current flows through the circuit.

Q. flow between the positive and negative terminals of the battery connected as power source in a circuit.

Q. A battery is of emf E is being charged from a charger such that positive terminal of the battery is connected to terminal A of charger and negative terminal of the battery is connected to terminal B of charger. The internal resistance of the battery is r.

Q. A battery consists of

n

number of identical cells having internal resistance connected in series. The terminals of the battery are short circuited and the current

I

is measured.
Which of the following graphs shows correct relationship between

I

and

n

Q. Two batteries A and B each of emf 2 volt are connected in series to external resistance

R = 1 Ω

. Internal resistance of A and B are

1.9 Ω

and

0.9 Ω

respectively. What is the potential difference between the terminals of battery A ?