Skip to content
Philoid
Browse Saved
Back to chapter
Physics
3. Current Electricity
Home · Class 12 · Physics · Physics Part-I · 3. Current Electricity
Prev
Next
Q4 of 30 Page 127

Three resistors 2 W, 4 W and 5 W are combined in parallel. What is the total resistance of the combination?


Since three resistors are connected in parallel, hence total resistance(R) of the combination is given by





Hence, Total Resistance is 1.05 Ω


More from this chapter

All 30 →
3

Three resistors 1Ω, 2Ω and 3Ω are combined in series. What is the total resistance of the combination?

3

If the combination is connected to a battery of emf 12 V and negligible internal resistance, obtain the potential drop across each resistor.

4

If the combination is connected to a battery of emf 20 V and negligible internal resistance, determine the current through each resistor, and the total current drawn from the battery.

5

At room temperature (27.0 °C) the resistance of a heating element is 100Ω. What is the temperature of the element if the resistance is found to be 117Ω, given that the temperature coefficient of the material of the resistor is 1.70 × 10–4 °C–1.

Questions · 30
3. Current Electricity
1 2 3 3 4 4 5 6 7 8 9 10 10 10 11 12 13 14 15 15 16 17 18 19 20 20 20 21 22 23
Back to chapter
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved