Calculate the equivalent resistance of three resistors of 5 Ω, 10 Ω and 15 Ω which are connected in (a) series, (b) parallel. Three resistors of 15 kΩ, 20 kΩ and 24 kΩ are connected in parallel. What...

Calculate the equivalent resistance of three resistors of 5 Ω, 10 Ω and 15 Ω which are connected in (a) series, (b) parallel.

Three resistors of 15 kΩ, 20 kΩ and 24 kΩ are connected in parallel. What is (a) the total resistance and (b) the power dissipated if a voltage of 24 V is applied across the circuit?