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# problems_38 - PHY2061 R D Field Chapter 38 Problems Problem...

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PHY2061 R. D. Field Problems Chapter 38 Page 1 of 5 C R ε Chapter 38 Problems Problem 1: A parallel-plate capacitor whose plates have radius R is being charged by a current I . What is the magnitude of the magnetic field ( in Tesla ) between the plates a distance r = R/2 from the center? Problem 2: A parallel-plate capacitor whose plates have radius r is being charged through a resistor R by an EMF ε as shown in the Figure . If the switch is closed at t = 0 , what is the maximum magnitude of the magnetic field between the plates of the capacitor a distance r/2 from the center? (Note: k = µ 0 /4 π ) Problem 3: The potential difference, V C , across a 3 Farad parallel-plate capacitor whose plates have radius R = 2 cm varies with time and is given by V C (t) = at , with a = 10 V/s . What is the magnitude of the magnetic field ( in microT ) between the plates of the capacitor a distance R from the center? Problem 4: A 2 milliFarad parallel-plate capacitor whose plates are circular with radius R = 0.5 cm is connected to an EMF-source that increases uniformly with time at a rate of 150 V/s . What is the magnitude of the magnetic field (in microTesla ) between the plates of the capacitor a distance r = R from the center?

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PHY2061 R. D. Field Problems Chapter 38 Page 2 of 5 z-out R Problem 5: Consider the situation illustrated in the figure. A uniform electric field points in the z direction (out of the paper
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problems_38 - PHY2061 R D Field Chapter 38 Problems Problem...

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