Q. 4 B3.7( 38 Votes )

# 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.

Answer :

Given, EMF of the battery E = 20Volt

Current flowing through 2 Ω resistor is given by

Current flowing through 4 Ω resistor is given by

Current flowing through 5 Ω resistor is given by

Current flowing through 2 Ω resistor is 10Ampere; 4 Ω resistor is 5Ampere and through 5 Ω resistor is 4Ampere respectively.

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An inductance of 2.0 H, a capacitance of 18 μF and a resistance of 10 kΩ are connected to an AC source of 20 V with adjustable frequency.

(a) What frequency should be chosen to maximize the current in the circuit?

(b) What is the value of this maximum current?

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(A) The equivalent emf is larger than either of the two emfs.

(B) The equivalent internal resistance is smaller than either of the two internal resistances.

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