A 15.0 μF capacitor is charged to 200 V and is then connected across a 46.0 Ω resistor. What is the current in the resistor after 6.4 μs?
Amp
2. Determine the equivalent capacitance between A and B for the group of capacitors in the drawing. Let C1 = 11 µF and C2 = 4.0 µF.
µF
3. Determine the power dissipated in the R2 resistor in the circuit shown in the drawing. (R1 = 3.0 Ω, R2 = 8.0 Ω and V1 = 11 V.)
W
4. For the circuit shown in the drawing, find the total current (I). Let V = 26.0 volts, R1 = 9.00 Ω, R2 = 4.50 Ω, R3 = 5.50 Ω, R4 = 11.5 Ω, R5 = 8.00 Ω, R6 = 13.5 Ω.
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5. For the circuit shown in the drawing, find the current in the R resistor. Let V = 26.0 V, R = 20.0 Ω.
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6. A parallel combination of a 6.50 Ω resistor and an unknown resistor R is connected in series with a 16.0 Ω resistor and a battery. This circuit is then disassembled and the three resistors are then connected in series with each other and the same battery. In both arrangements, the current through the 6.50 Ω resistor is the same. What is the unknown resistance R?
Ω
7. Find the current in the R2 resistor in the drawing (V1 = 16.0 V, V2 = 20.0 V, V3 = 23.0 V, R1 = 1.60 Ω, R2 = 2.30 Ω, and R3 = 3.00 Ω).
A
8. An electron travels at a speed of 2.40 × 104 m/s through a uniform magnetic field whose magnitude is 1.10 × 103 T. What is the magnitude of the magnetic force on the electron if its velocity vector and the magnetic field vector make an angle of 50.0°?
N
9. A positive charge of 2.40 C moves horizontally to the right at a speed of 2.10 × 104 m/s and enters a magnetic field directed vertically downward. If it experiences a force of 20.0 N, what is the magnetic field strength?
T
10. A vertical straight wire carrying an upward 12.0 A current exerts an attractive force per unit length of 9.40 × 10-4 N/m on a second parallel wire 6 cm away. What is the current that flows through the second wire?
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