Current Electricity

Related Questions

• n equal resistors are first connected in series and then connected in parallel. What is the ratio of the maximum to the minimum resistance

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• In a neon discharge tube $2.9 \times {10^{18}}\,N{e^ + }$ ions move to the right each second while $1.2 \times {10^{18}}$ electrons move to the left per second. Electron charge is $1.6\times10^{-19}C$. The current in the discharge tube

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• Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be

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• A wire of resistance R is cut into ‘n’ equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be

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• If an electron revolves in the path of a circle of radius of $0.5 \times 10^{–10}m$ at frequency of $5 \times 10^{15}$ cycles/s the electric current in the circle is (Charge of an electron = $1.6 \times 10^{–19} C$ )

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