How much current will a heating device draw from a $180 V$ source, if the resistance of the geyser is $100 Ω$ ?

4 Ampere

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1.8 Ampere

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1 Ampere

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8 Ampere

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Solution

The correct option is B
1.8 Ampere

Given, V = 180 V (voltage of the source) and R = 100 Ω (Resistance of the geyser)
From Ohm's law, we know that V = IR
Or, $I = \frac{V}{R}$
In the question, $V = 180 V a n d R = 100 Ω$
$C u r r e n t (I) = \frac{180}{100} = 1.8$
Hence the heating device draws a current of 1.8A.

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