Ohm's law: All physical conditions of a conductor remaining same, the current flowing through it is directly proportional to the potential difference at its ends. Note: From physical conditions, it is implied that temperature, density, length, area of cross-section, etc., should not change with the passage of the current through the conductor.

Why is fuse wire always placed in a live circuit?

The fuse wire is always connected in the live wire of the circuit because if the fuse is put in the neutral wire, then due to excessive flow of current when the fuse burns, current stops flowing in the circuit, but the appliance remains connected to the high potential point of the supply through the live wire.

E M B I B E

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 17

EASY

10th CBSE

IMPORTANT

Earn 100

State Ohm's Law.

Important Questions on Electricity

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 17

Draw a schematic diagram of the circuit for studying Ohm's Law.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 18

Draw a schematic diagram of a circuit consisting of a battery of five

2 V

cells, a

5 Ω

resistor, a

10 Ω

resistor and a

15 Ω

resistor, and a plug key, all are connected in series.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 18

From the schematic diagram of a circuit consisting of a battery of five

2 V

cells, a

5 Ω

resistor, a

10 Ω

resistor and a

15 Ω

resistor, and a plug key, all are connected in series, calculate the electric current passing through the circuit when the key is closed.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 19

If a $12 V$ battery is connected to an arrangement of resistance given in the figure. Calculate the total effective resistance of the arrangement.

Question Image

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 19

If a $12 V$ battery is connected to an arrangement of resistance given in the figure. Calculate the total current flowing in the circuit.

Question Image

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 20

Two identical resistors, each of resistance 2 ohm, are connected in turn
(i) in series and
(ii) in parallel, to a battery of 12 volts.
Calculate the ratio of power consumed in two cases.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 3 - Electricity>EXERCISE - 3B>Q 20

Two identical resistors, each of resistance