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Two charges q1 = –6 μC and q2 = +10 μC are placed 12 cm apart. Another charge, q3 = −2 μC is placed in the middle as shown in Figure 6. Determine the magnitude and direction of the force acting on q3 by the charge q1 and q2
A 6 V battery is connected across three 100 ohm resistors in series. What is the current through each resistor?
There are four equal-value resistors connected in series with a 5 V source. A current of 4.63 mA is measured. What is the value of each resistor?
Point charge q1 = -6.00 * 10-6 C is on the x-axis at x = -0.200 m. Point charge q2 is
on the x-axis at x = +0.400 m. Point charge q3 = +3.00 * 10-6 C is at the origin. What
is q2 (magnitude and sign) (a) if the net force on q3 is 6.00 N in the +x direction; (b)
if the net force on q3 is 6.00 N in the -x direction?
Explain SI unit of resistivity.
According to Kirchoof second law, When the negative potential increase in a closed circut then the positive potential in the same closd circuit.........
(Increase-Decrease)
A 9 V battery is connected to a resistor with resistance of 1.60 Ω. (a) How many electrons leave the battery per minute? (b) If the resistor is made of copper wire with radius of 25 µm, calculate the length of the copper wire. The resistivity of copper is given as 1.68×10−8 Ω·m.
An empty swimming pool with a square floor dimension has a volume of 3y 2 m3 . Given the weight of air in the swimming pool is about 500 N and the air density is 1.29 kg/m3 . (a) Find the length of the swimming pool’s floor, y. (b) Determine the force exerted by air on the floor of the swimming pool
Explain ohm s law?
Explain resistance
