Question

the resistance of a conductor is 5 ohm.A current of 3 ampere passes through it for 20 seconds.the heat produced in the conductor will be
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Answer 1

Answer:

it will be 900 joules.

Explanation:

1. we know that H=IsquareRT

• Now,we have given,R=5ohm,I=3A,t=20s
• So,H=3square×5×20
• H=9×5×20

2.H=900joules.

Answer 2

Given

• Resistance = 5Ω
• Current = 3A
• Time = 20 sec

To Find

• Heat Produced

Solution

● H = I²Rt

Where,

• H = Heat Produced = ?
• I² = Current = 3 A
• R = 5Ω
• t = 20 sec

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✭ Heat Produced :

→ H = I²Rt

→ H = 3² × 5 × 20

→ H = 9 × 5 × 20

→ H = 900 J

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Knowledge Boost

• Whenever any appliances is used then as electricity is passed, heat energy is produced.

• This heat Produced is equal to the product of the square of the current, the resistance and the time