Each of the six ideal batteries of emf 20V is connected to an external resistance of 4- as shown in the figure- The current through the resistance is

The correct option is D 15A Equivalent emf of the series combination #160; E_eq = E+E+E = 3E = 3× 20 = 60 V External resistance #160; R = 4 ...

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Standard XII

Physics

Parallel Combination of Cells

Each of the s...

Question

Each of the six ideal batteries of emf $20 V$ is connected to an external resistance of $4 Ω$ as shown in the figure. The current through the resistance is

6 A

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3 A

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4 A

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15 A

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Solution

The correct option is D $15 A$
Equivalent emf of the series combination $E_{e q} = E + E + E = 3 E = 3 \times 20 = 60 V$
External resistance $R = 4 Ω$
$∴$ $I = \frac{E_{e q}}{R} = \frac{60}{4} = 15 A$

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Each of the six ideal batteries of emf 20V is connected to an external resistance of 4Ω as shown in the figure. The current through the resistance is

The correct option is D 15AEquivalent emf of the series combination Eeq=E+E+E=3E=3×20=60 VExternal resistance R=4Ω∴ I=EeqR=604=15 A

Each of the six ideal batteries of emf $20 V$ is connected to an external resistance of $4 Ω$ as shown in the figure. The current through the resistance is

The correct option is D $15 A$
Equivalent emf of the series combination $E_{e q} = E + E + E = 3 E = 3 \times 20 = 60 V$
External resistance $R = 4 Ω$
$∴$ $I = \frac{E_{e q}}{R} = \frac{60}{4} = 15 A$