Define current, give its mathematical expression. What is its $SI$ unit ?
Define current, give its mathematical expression. What is its $SI$ unit ?
Electric current is defined as the rate of flow of electrons. Mathematically, it is expressed as $I =\frac{ Q }{t} .$ In SI, it is measured in ampere.
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$(i)$ What happens to the glow of the other two bulbs when the bulb $B_{1}$ gets fused?
$(ii)$ What happens to the reading of $A_{1}, A_{2}, A_{3}$ and A when the bulb $B_{2}$ gets fused ?
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$(i)$ What happens to the glow of the other two bulbs when the bulb $B_{1}$ gets fused?
$(ii)$ What happens to the reading of $A_{1}, A_{2}, A_{3}$ and A when the bulb $B_{2}$ gets fused ?
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