Question

a current of 2 amperes passes through a conductor and produces 80 joules of heat in 10 sec what is the resistance​

Answer 1

Explanation:

we have ,

current - 2 A

P.d or voltage = 80 joules ÷ 10= 8 volts

Resistence = V ÷ I

i.e

8 ÷ 2 =4 ohms

Answer 2

Answer :

Current flow = 2A

Heat produced = 80J

Time interval = 10s

We have to find resistance of conductor$.$

★ Formula of heat produced be conductor in terms of current flow and resistance is given by

• H = I²Rt

H denotes heat energy

I denotes current

R denotes resistance

t denotes time

By substituting the given values, we get

⭆ H = I²Rt

⭆ 80 = (2)²R × 10

⭆ 4R = 80/10

⭆ R = 8/4

⭆ R = 2Ω

Other related formulae :

• H = I²R × t = V²/R × t = VI × t
• Power = Energy / time
• P = I²R = V²/R = VI

Cheers!