11) For the circuit shown, R 1 = R 3 = R 9 = R 11 = 102.0 Ohms, the rest of the

Question

11)

For the circuit shown, R1= R3 = R9 = R11= 102.0 Ohms, the rest of the resistors are 204.0 Ohms.

a) Without doing any simplification (or combination) identify the number of pairs of resistors (that is 2 resistors) that are in series.

b) Without doing any simplification (or combination) identify the number of pairs of resistors (that is 2 resistors) that are in parallel.

c) Find R12 the equivalent resistance of resistors R1, and R2.

d) Find R123 the equivalent resistance of resistors R1, R2, and R3.

e) Find R12345 the equivalent resistance of resistors R1, R2, R3, R4, and R5.

12)

Consider the circuit shown. All light bulbs are identical with a resistance of 6.0 Ohms. The battery is V=6.0V:

a) What is in ? the resistance seen by the battery?

b) What is in A the current through bulb C?

c) What is in A the current through bulb A?

d) What is in V the voltage across bulb D?

e) What is in W the power dissipated in bulb H?

13)

a) What is the charge time constant for the circuit? Answer in units of seconds.

b) What is the discharge time constant for the circuit? Answer in units of seconds.

After fully discharging the circuit, we close S2 and then close S1. The capacitor will charge.

c) What is in micro-amps the current through R2 once the capacitor is fully charged?

d) What is in micro-amps the current through R3 once the capacitor is fully charged?

14)

For the wires shown in the Figure below, the wires on the left carry a current of I1 = I2 = 1.3A (out of the page), the wire on the right carries a current of I3 = 3.9A (into the page), a = 0.17 m and b= 0.36 m.

a) Find in Tesla the magnitude of the magnetic fields at point X due to the wire carrying I3.

b) Find the direction (as an angle relative to traditional positive x-direction) of the magnetic fields at point X due to the wire carrying I3.

c) Find in Tesla the magnitude of the magnetic fields at point X due to the wire carrying I1.

d) Find the direction (as an angle relative to traditional positive x-direction) of the magnetic fields at point X due to the wire carrying I1.

e) Find in Teslas the magnitude of the overall magnetic field due to all 3 wires at point X.

15)

a) What would be in m/s the velocity of the ions that move in a straight horizontal line when moving through the velocity selector?

b) What would be in meters the radius of the path of the ions when moving through the Deflection Chamber if they hit the detector at a distance of 0.505m from the entrance of the deflection chamber?

c) What is the sign of the charge of the ions if they follow the path shown in the Figure?
negative   positive    both negative and positive ions would follow that same path

d) What is in kg the mass of the ions that hit the detector  at a distance of 0.505m from the entrance of the deflection chamber?

Explanation / Answer

15 a) 55.814 *10^3 m/s

b) 0.2525 m

c) positive

d) 2.244 * 10^-26 kg

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