Solution Library

Calculate Current Flow Through A Resistor

Question In the figure shown, what is the current through the 5 Ω resistor?   ... Read More

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How To Find Current Through A Resistor And Capacitor In Series Connection In Circuit

Question A 15 Ω resistor and a 16 μ capacitor are connected in series to a 12 V battery. At t = 0.6 m/sec after the connection is made, what is the current in the circuit?     ... Read More

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What Happens When An Object Is Attracted Towards A Positively Charged Insulating Rod

Question A positively charged insulating rod is brought close to an object that is suspended by a string. If the object is attracted toward the rod we can conclude: (1) none of these (2) the object is positively charged (3) the object is an insulator (4) the object is a conductor (5) the objec ... Read More

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Discuss About Positioning Of Charges To Make Equilibrium Of Charges

Question Charges +3Q and –9Q are held in place at positions x = 0 m and x = 2 m, respectively. At what position in x (in m) should a third charge be placed so that it is in equilibrium? (1) –2.73 (2) +1.33 (3) +3.73 (4) –1.33 (5) –1.86   ... Read More

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Evaluate The Magnitude Of The Electric Field In The Center Of The Square

Question Charges are arranged on a square of side d as shown in the diagram. The magnitude of the electric field in the center of the square can be written CkQ /d 2 .What is C? (1) 12.0 (2) 3.00 (3) 2.00 (4) 1.00 (5) 0   ... Read More

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Calculate The Magnitude Of The Electric Field At The Center Of A Disk

Question 2.0 µC of charge is uniformly distributed on a thin non-conducting disk of radius 10.0 cm. What is the magnitude of the electric field at the center of the disk in V/m? (1) 3.6 × 106 (2) 1.8 × 106 (3) 5.4 × 106 (4) 7.2 × 106 (5) 0   ... Read More

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Calculate The Total Electric Flux Through The Cylinder

Question A long, straight wire is uniformly charged with a linear charge density of 4.0µC/m. The wire runs along the axis of a cylinder of radius 3.0 cm and height 30.0 cm. What is the total electric flux through the cylinder surfaces in N.m2/C? (1) 1.36 × 105 (2) 3.24 &time ... Read More

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Calculate Net Charge On Sphere Placed At Center Of Conducting Shell

Question A solid conducting sphere of 15 cm radius is located at the center of a spherical conducting shell, whose inner radius is 21 cm and outer radius 42 cm. At a distance of 50 cm from the center of these concentric conductors, the electric field is 2.1 x 105 V/m and is pointing outward. The sh ... Read More

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What Happens To Capacitance When All Dimensions Are Doubled Of Cylindrical Capacitor

Question A cylindrical capacitor of length L comprises two coaxial cylinders of radii a and b. If all the dimensions are doubled, the capacitance will: (1) Increase by a factor of 2 (2) Increase by a factor of 4 (3) Decrease by a factor of 2 (4) Decrease by a factor of 4 (5) be unaffected &nb ... Read More

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How To Calculate Equivalent Capacitance

Question Four capacitors are connected as shown in the diagram. What is the equivalent capacitance in µF? (1) 1.5 (2) 3.3 (3) 4.0 (4) 6.0 (5) 0.67 ... Read More

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How To Calculate Resistance Of Wire Made From Same Material And Different Dimensions

Question A certain wire has resistance R. What is the resistance of a second wire, made of the same material, which is half as long and has 1/3 the diameter?   ... Read More

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Calculate The Voltage Of Capacitor As A Function Of Time

Question A circuit contains a resistor R in series with a capacitor C. Suppose the current I charging the capacitor is kept constant. Which equation correctly gives the potential difference VC across the capacitor as a function of time t?   ... Read More

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