NEETPhysicsCurrent ElectricityMCQ+4 / −1
The power dissipated in the circuit shown in the figure is 30 watts. The value of R is
- A20
- B15
- C10
- D30
More from Current Electricity
- If voltage across a bulb rated 220 volt-100 watt drops by 2.5% of its rated value, the percentage of the rated value by which the power would decrease is2012 · MCQ
- In the circuit shown the cells A and B have negligible resistances. For VA = 12 V, R1 = 500 and R = 100 the galvanometer (G) shows no deflection. The value of Vs is Includes diagram2012 · MCQ
- A ring is made of a wire having a resistance R0 = 12 . Find the points A and B, as shown in the figure, at which a current carrying conductor should be connected so that the resistance R of the sub circuit between these point is… Includes diagram2012 · MCQ
- A thermocouple of negligible resistance produces an e.m.f. of 40 µV/ºC in the linear range of temperature. A galvanometer of resistance 10 ohm whose sensitivity is 1 µA/division, is employed with the thermocouple. The smallest value of…2011 · MCQ
- In the circuit shown in the figure, if the potential at point A is taken to be zero, the potential at point B is Includes diagram2011 · MCQ
- A current of 2 A flows through a 2 resistor when connected across a battery a 2 resistor when connected across a battery. The same battery supplies a current of 0.5 A when connected across a 9 resistor. The…2011 · MCQ
- If power dissipated in the 9 resistor in the circuit shown is 36 watt, the potential difference across the 2 resistor is Includes diagram2011 · MCQ
- A potentiometer circuit is set up as shown. The potential gradient, across the potentiometer wire, is k volt/cm and the ammeter, present in the circuit, reads 1.0 A when two way key is switched off. The balance points, when the key between… Includes diagram2010 · MCQ