- 1(current)
Q. No.| 1. | \(2:9\) | 2. | \(1:2\) |
| 3. | \(2:3\) | 4. | \(1:1\) |
Power consumed in the given circuit is \(P_1.\) On interchanging the position of \(3~\Omega\) and \(12~\Omega\) resistances, the new power consumption is \(P_2.\) The ratio of \(\dfrac{P_2}{P_1}\) is:
| 1. | \(2\) | 2. | \(\dfrac 12\) |
| 3. | \(\dfrac 35\) | 4. | \(\dfrac 25\) |
Two cities are \(150~\text{km}\) apart. The electric power is sent from one city to another city through copper wires. The fall of potential per km is \(8~\text{volts}\) and the average resistance per \(\text{km}\) is \(0.5~\text{ohm}.\) The power loss in the wire is:
| 1. | \(19.2~\text{W}\) | 2. | \(19.2~\text{kW}\) |
| 3. | \(19.2~\text{J}\) | 4. | \(12.2~\text{kW}\) |
A filament bulb \((500~\text{W},100~\text{V})\) is to be used in a \(230~\text{V}\) main supply. When a resistance\(R\) is connected in series, the bulb works perfectly and consumes \(500~\text{W}.\) The value of \(R\) is:
| 1. | \(230~\Omega\) | 2. | \(46~\Omega\) |
| 3. | \(26~\Omega\) | 4. | \(13~\Omega\) |
Which of the following acts as a circuit protection device?
| 1. | Fuse | 2. | Conductor |
| 3. | Inductor | 4. | Switch |
| 1. | \(\dfrac{a^3R}{3b}\) | 2. | \(\dfrac{a^3R}{2b}\) |
| 3. | \(\dfrac{a^3R}{b}\) | 4. | \(\dfrac{a^3R}{6b}\) |
| 1. | \(\large\dfrac{t_1t_2}{t_1+t_2}\) | 2. | \(t_1+t_2\) |
| 3. | \({\large\dfrac12}(t_1+t_2)\) | 4. | \(\large\dfrac{t_1t_2}{2(t_1+t_2)}\) |
1. \(50~\text{W}\)
2. \(2500~\text{W}\)
3. \(20~\text{W}\)
4. \(500~\text{W}\)
Two resistors \(R\) and \(2R\) are connected in series in an electric circuit. The thermal energy developed in \(R\) and \(2R\) are in the ratio of:
1. \(1:2\)
2. \(2:1\)
3. \(1:4\)
4. \(4:1\)
| 1. | one fourth | 2. | one third |
| 3. | two times | 4. | one half |
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.