Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.
What is the magnitude of a point charge whose electric field 50 cm away has a magnitude of 2.0 N/C?
Answer Attachments
Next: Three point charges lie along the x axis as shown in figure 2.2. The positive charge q1 =15.0µC is at x = 2.00 m, the positive...
Previous: Two particles are fixed to an x- axis: particle 1 of charge -2.1 x 10-8 C at x = 20 cm and particle 2 of charge...
View more Electricity and Magnetism I Questions and Answers | Return to Questions Index
Three point charges lie along the x axis as shown in figure 2.2. The positive charge q1 =15.0μC isat x = 2.00 m, the positive charge q2 = 6.00 μC is at the origin, and the resultant force acting onq3 is zero. What is the x coordinate of q3?
Date posted: May 11, 2021 . Answers (1)
Consider three point charges located at the corners of a right triangle as shown in figure 2.1, where q1= q3 = 5.0 μC, q2 = -2.0 μC and a = 0.10 m. Find the resultant force exerted on q3.
The electron and proton of a hydrogen atom are separated (on the average) by a distance of approximately 5.3 x 10-11 m. Find the magnitudes of the electric force between the two particles.
How much charge is represented by 4,600 electrons?
Find the currents l1, l2, and l3 in the circuit shown in figure below.
Find the current I in the circuit of the figure below.
The terminal p.d of a battery is 12 V when an external resistance of 20 Ω is connected and 13.5 V when an external resistance of 45 Ω is connected. Calculate the emf and internal resistance of the battery.
A battery of emf 40 V and internal resistance 5 Ω is connected to a resistance of 15 Ω.Calculate the terminal p.d.
A cell of unknown emf E and internal resistance 2 Ω is connected to a 5 Ω resistance. If the terminal p.d V is 1.0 V, calculate E.
Explain the difference between load resistance in a circuit and internal resistance in a battery.
Four resistors are connected as shown in figure below.(a) Find the equivalent resistance between points a and c.(b) What is the current in each resistor if a potential difference of 42 V is maintained between a and c ?
Consider five resistors connected as shown in figure below. Find the equivalent resistance between points a and b.
Define current density and show how it is related to drift velocity.