268382
A bulb rated \(60 \mathrm{~W}-120 \mathrm{~V}\) is connected to \(80 \mathrm{~V}\) mains. W hat is the current through the bulb
1 \(\frac{1}{3} \mathrm{~A}\)
2 \(\frac{2}{3} \mathrm{~A}\)
3 \(\frac{5}{3} A\)
4 \(\frac{3}{5} A\)
Explanation:
\(R=\frac{V^{12}}{P^{1}} \quad\) and \(i=\frac{V}{R}\)
Current Electricity
268383
An electric bulb has the following specifications 100 watt, 220 volt. The resistance of bulb
1 384
2 \(484 \Omega\)
3 \(344 \Omega\)
4 \(584 \Omega\)
Explanation:
\(R=\frac{V^{2}}{P}\)
Current Electricity
268384
A 200W and 100W bulbs, both meant for operation at \(220 \mathrm{~V}\), are connected in series to 220V. The power consumption by the combination is
1 \(46 \mathrm{~W}\)
2 \(66 \mathrm{~W}\)
3 \(56 \mathrm{~W}\)
4 \(75 \mathrm{~W}\)
Explanation:
\(P=\frac{P_{1} P_{2}}{P_{1}+P_{2}}\)
Current Electricity
268385
Five bulbs, each rated at \(40 \mathrm{~W}-220 \mathrm{~V}\) are used for 5 hours daily on 20V line. H ow may units of electric energy is consumed in a month of 30 days?
268386
An electric K ettle has two heating coils. W hen one of them is switched on water in it boils in 6 minutes and when other is switched on water boils in 4 minutes. In what time will the water boil if both coil are switched on simultaneously
268382
A bulb rated \(60 \mathrm{~W}-120 \mathrm{~V}\) is connected to \(80 \mathrm{~V}\) mains. W hat is the current through the bulb
1 \(\frac{1}{3} \mathrm{~A}\)
2 \(\frac{2}{3} \mathrm{~A}\)
3 \(\frac{5}{3} A\)
4 \(\frac{3}{5} A\)
Explanation:
\(R=\frac{V^{12}}{P^{1}} \quad\) and \(i=\frac{V}{R}\)
Current Electricity
268383
An electric bulb has the following specifications 100 watt, 220 volt. The resistance of bulb
1 384
2 \(484 \Omega\)
3 \(344 \Omega\)
4 \(584 \Omega\)
Explanation:
\(R=\frac{V^{2}}{P}\)
Current Electricity
268384
A 200W and 100W bulbs, both meant for operation at \(220 \mathrm{~V}\), are connected in series to 220V. The power consumption by the combination is
1 \(46 \mathrm{~W}\)
2 \(66 \mathrm{~W}\)
3 \(56 \mathrm{~W}\)
4 \(75 \mathrm{~W}\)
Explanation:
\(P=\frac{P_{1} P_{2}}{P_{1}+P_{2}}\)
Current Electricity
268385
Five bulbs, each rated at \(40 \mathrm{~W}-220 \mathrm{~V}\) are used for 5 hours daily on 20V line. H ow may units of electric energy is consumed in a month of 30 days?
268386
An electric K ettle has two heating coils. W hen one of them is switched on water in it boils in 6 minutes and when other is switched on water boils in 4 minutes. In what time will the water boil if both coil are switched on simultaneously
268382
A bulb rated \(60 \mathrm{~W}-120 \mathrm{~V}\) is connected to \(80 \mathrm{~V}\) mains. W hat is the current through the bulb
1 \(\frac{1}{3} \mathrm{~A}\)
2 \(\frac{2}{3} \mathrm{~A}\)
3 \(\frac{5}{3} A\)
4 \(\frac{3}{5} A\)
Explanation:
\(R=\frac{V^{12}}{P^{1}} \quad\) and \(i=\frac{V}{R}\)
Current Electricity
268383
An electric bulb has the following specifications 100 watt, 220 volt. The resistance of bulb
1 384
2 \(484 \Omega\)
3 \(344 \Omega\)
4 \(584 \Omega\)
Explanation:
\(R=\frac{V^{2}}{P}\)
Current Electricity
268384
A 200W and 100W bulbs, both meant for operation at \(220 \mathrm{~V}\), are connected in series to 220V. The power consumption by the combination is
1 \(46 \mathrm{~W}\)
2 \(66 \mathrm{~W}\)
3 \(56 \mathrm{~W}\)
4 \(75 \mathrm{~W}\)
Explanation:
\(P=\frac{P_{1} P_{2}}{P_{1}+P_{2}}\)
Current Electricity
268385
Five bulbs, each rated at \(40 \mathrm{~W}-220 \mathrm{~V}\) are used for 5 hours daily on 20V line. H ow may units of electric energy is consumed in a month of 30 days?
268386
An electric K ettle has two heating coils. W hen one of them is switched on water in it boils in 6 minutes and when other is switched on water boils in 4 minutes. In what time will the water boil if both coil are switched on simultaneously
268382
A bulb rated \(60 \mathrm{~W}-120 \mathrm{~V}\) is connected to \(80 \mathrm{~V}\) mains. W hat is the current through the bulb
1 \(\frac{1}{3} \mathrm{~A}\)
2 \(\frac{2}{3} \mathrm{~A}\)
3 \(\frac{5}{3} A\)
4 \(\frac{3}{5} A\)
Explanation:
\(R=\frac{V^{12}}{P^{1}} \quad\) and \(i=\frac{V}{R}\)
Current Electricity
268383
An electric bulb has the following specifications 100 watt, 220 volt. The resistance of bulb
1 384
2 \(484 \Omega\)
3 \(344 \Omega\)
4 \(584 \Omega\)
Explanation:
\(R=\frac{V^{2}}{P}\)
Current Electricity
268384
A 200W and 100W bulbs, both meant for operation at \(220 \mathrm{~V}\), are connected in series to 220V. The power consumption by the combination is
1 \(46 \mathrm{~W}\)
2 \(66 \mathrm{~W}\)
3 \(56 \mathrm{~W}\)
4 \(75 \mathrm{~W}\)
Explanation:
\(P=\frac{P_{1} P_{2}}{P_{1}+P_{2}}\)
Current Electricity
268385
Five bulbs, each rated at \(40 \mathrm{~W}-220 \mathrm{~V}\) are used for 5 hours daily on 20V line. H ow may units of electric energy is consumed in a month of 30 days?
268386
An electric K ettle has two heating coils. W hen one of them is switched on water in it boils in 6 minutes and when other is switched on water boils in 4 minutes. In what time will the water boil if both coil are switched on simultaneously
268382
A bulb rated \(60 \mathrm{~W}-120 \mathrm{~V}\) is connected to \(80 \mathrm{~V}\) mains. W hat is the current through the bulb
1 \(\frac{1}{3} \mathrm{~A}\)
2 \(\frac{2}{3} \mathrm{~A}\)
3 \(\frac{5}{3} A\)
4 \(\frac{3}{5} A\)
Explanation:
\(R=\frac{V^{12}}{P^{1}} \quad\) and \(i=\frac{V}{R}\)
Current Electricity
268383
An electric bulb has the following specifications 100 watt, 220 volt. The resistance of bulb
1 384
2 \(484 \Omega\)
3 \(344 \Omega\)
4 \(584 \Omega\)
Explanation:
\(R=\frac{V^{2}}{P}\)
Current Electricity
268384
A 200W and 100W bulbs, both meant for operation at \(220 \mathrm{~V}\), are connected in series to 220V. The power consumption by the combination is
1 \(46 \mathrm{~W}\)
2 \(66 \mathrm{~W}\)
3 \(56 \mathrm{~W}\)
4 \(75 \mathrm{~W}\)
Explanation:
\(P=\frac{P_{1} P_{2}}{P_{1}+P_{2}}\)
Current Electricity
268385
Five bulbs, each rated at \(40 \mathrm{~W}-220 \mathrm{~V}\) are used for 5 hours daily on 20V line. H ow may units of electric energy is consumed in a month of 30 days?
268386
An electric K ettle has two heating coils. W hen one of them is switched on water in it boils in 6 minutes and when other is switched on water boils in 4 minutes. In what time will the water boil if both coil are switched on simultaneously
