Question
Questions:
1. What voltage difference will produce a current 0.50 (A) through a 40 ohm resistor? 2. What power dissipation occurs when a 0.50 (A) c flows throu gh a 40 ohm resistor? (a) 1.0 W) b) 0.25 W) (c) 16 (W) 3. Four equal resistors connected in series have the same current and the same voltage drop across each resistor. True or False. (a) True (b) False 4. Four unequal resistors connected in series have different currents and different voltage drops across each resistor. True or False. (a) True (b False 5. Four unequal resistors connected in parallel have the same current but different voltage drops across each resistor. True or False. (a) True (b) False unequal capacitors connected in parallel have different charges on their positive plates but different voltage drops across each capacitor. True or False. (a)True (b) False 7. Two unequal capacitors connected in series have the same charge on each positive plate but different voltage drops across each capacitor. True or False. (a) True (b) False 8. A resistor R and capacitor Cin series are connected across the terminals of a battery at constant voltage After the switch is closed to complete the RC circuit, the charge Q on the positive plate of the capacitor increases linearly with time t. True of False. True (b) False 9. Magnetic field lines come out of the south pole and enter the north pole of a magnet. (a) True (b) False 10. The magnetic force on a moving charged particle is perpendicular to the velocity of the particle. (a) True (b False 11. The magnetic force on a moving charged particle is perpendicular to the magnetic 12. A straight segment of wire of length L carries a current I in an external magnetic field. The wire segment will erperience a maximum magnetic force if (a) the magnetic field is parallel to the wire (b) the magnetic field is perpendicular to the wire. 13. A charged particle moves in an external magnetic field. The charged particle will experience a maximum magnetic force if (a) the magnetic field is parallel to the
Explanation / Answer
1 . ixr = 2 ohm
2. power = i^2.R = 1 watts
3. True , True V= IR since I and R are same V will be same
4. Flase , True
5 . Flase , Flase in parallel circuit voltage will be same
6. True , Flase in parallel circuit voltage will be same
7. True , True Q = CV since C changes V changes
8.Flase "i" current is exponential function of time not linear function
9. Flase magnetic feild lines comes out from north and goes inside south
10. True since F = q(VxB) it is cross product it will be perpendicular
11. True same F =q(VXB)
12. Flase , True F= iLxB since it is cross product i and B shpuld be perpendicular.
13 . Flase F = q(VXB) cross product of parallel components is zero
