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In the circuit shown below, the cell has of 10V and internal resistance of 1 ohm. The other resistances are shown in figure. The potential difference Va – Vg is 1) 6V 2) 4V 3) 2V 4) -2V E-10V 40 A 20 ww 20 8

In the circuit shown below, the cell has of 10V and internal resistance of 1 ohm. The other resistances are shown in figure. The potential difference Va – Vg is 1) 6V 2) 4V 3) 2V 4) -2V E-10V 40 A 20 ww 20 8

College Physics
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter21: Circuits And Dc Instruments
Section: Chapter Questions
Problem 25CQ: Suppose you are using a multimeter (one designed to measure a range of voltages, currents, and...
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33. Two bulbs rated (25 W –- 220 V) and (100 W – 220 V) are connected in series to a 440 V line. Which one is likely to fuse? 26. In the circuit shown below, the cell has an e.m.f of 10V and internal resistance of 1 ohm. The other resistances are shown in figure. The potential difference VA - VB is 1) 6V 2) 4V 3) 2V 4) -2V 2) 100 W bulb 1) 25 W bulb 3) both bulbs 34. Three 60 W, 120 V light bulbs are connected across a 120 V power source. If resistance of each bulb does not change with current then find 4) none E-10v 10 A 20 20 B 27. The potential drop across the 32 resistor is 1) 1 V 2) 1.5 V 3) 2 V 4) 3 V 28. For what value of R in circuit, current through 4 N resistance is zero? out total power delivered to the three bulbs. 1) 180 W 2) 20 W 30 120 V 3) 40 W 4) 60 W 35. A resistor Rị dissipates the power P when connected to a certain generator. If the resistor R2 is put in series with R1, the power dissipated by 1) 4 N 2) 1 0 3) 30 4) 52 20 R1 1) Decreases 29. Find current in the branch CD of the circuit 1) 15 A 2) 35 3) 10 A 4) 25 A 2) Increases 3) Remains the same 4) Any of the above depending upon the relative values of R, and R2 36. What is the ratio of heat generated in R and 2R? 30 30. In the circuit shown, calculate the current through 6 V battery. 1) (1/4) A 2) (1/8) A 3) (1/2) A 4) none of these 31. In the circuit diagram, all the bulbs are identical. Which bulb willI,be the brightest? 1) 2:1 2) 1:2 3) 4:1 2R 4) 1:4 37. Consider four circuits shown in the figure below. In which circuit power dissipated is greatest 1) A 2) B (Neglect the internal resistance of the power 10 V supply)? 3) С 4) D 32. When electric bulbs of same power, but different 1) ER marked voltage are connected in series across the power line, their brightness will be 1) proportional to their marked voltage 2) inversely proportional to their marked voltage 3) proportional to the square of their marked voltage 4) inversely proportional to the square of their marked voltage SR 3) R ER 38. Two bulbs of 500 watt and 200 watt are manufactured to operate on 220 volt line. The
Transcribed Image Text:33. Two bulbs rated (25 W –- 220 V) and (100 W – 220 V) are connected in series to a 440 V line. Which one is likely to fuse? 26. In the circuit shown below, the cell has an e.m.f of 10V and internal resistance of 1 ohm. The other resistances are shown in figure. The potential difference VA - VB is 1) 6V 2) 4V 3) 2V 4) -2V 2) 100 W bulb 1) 25 W bulb 3) both bulbs 34. Three 60 W, 120 V light bulbs are connected across a 120 V power source. If resistance of each bulb does not change with current then find 4) none E-10v 10 A 20 20 B 27. The potential drop across the 32 resistor is 1) 1 V 2) 1.5 V 3) 2 V 4) 3 V 28. For what value of R in circuit, current through 4 N resistance is zero? out total power delivered to the three bulbs. 1) 180 W 2) 20 W 30 120 V 3) 40 W 4) 60 W 35. A resistor Rị dissipates the power P when connected to a certain generator. If the resistor R2 is put in series with R1, the power dissipated by 1) 4 N 2) 1 0 3) 30 4) 52 20 R1 1) Decreases 29. Find current in the branch CD of the circuit 1) 15 A 2) 35 3) 10 A 4) 25 A 2) Increases 3) Remains the same 4) Any of the above depending upon the relative values of R, and R2 36. What is the ratio of heat generated in R and 2R? 30 30. In the circuit shown, calculate the current through 6 V battery. 1) (1/4) A 2) (1/8) A 3) (1/2) A 4) none of these 31. In the circuit diagram, all the bulbs are identical. Which bulb willI,be the brightest? 1) 2:1 2) 1:2 3) 4:1 2R 4) 1:4 37. Consider four circuits shown in the figure below. In which circuit power dissipated is greatest 1) A 2) B (Neglect the internal resistance of the power 10 V supply)? 3) С 4) D 32. When electric bulbs of same power, but different 1) ER marked voltage are connected in series across the power line, their brightness will be 1) proportional to their marked voltage 2) inversely proportional to their marked voltage 3) proportional to the square of their marked voltage 4) inversely proportional to the square of their marked voltage SR 3) R ER 38. Two bulbs of 500 watt and 200 watt are manufactured to operate on 220 volt line. The
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