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### Course: Class 10 Physics (India)>Unit 3

Lesson 7: Electric power and heating effect of current

# Solved example - Calculating power & heat dissipated

Let's solve some numerical on electric power and heat dissipated. Created by Mahesh Shenoy.

## Want to join the conversation?

• is r directly or indirectly proportional to heat
• as resistance increases heat also increases
hence r is directly proportional to heat
• How does power change when multiple appliances are connected in series or a parallel connection? Are they added?
• In the first question you have applied the formula V squared/R only in the numericals but not mentioned units.
(1 vote)
• Though it is the best idea to always mention units...It's okay to sometimes skip that in calculations when we know what the unit of the final answer will be.