Physics - Resistance Problem

1. This pre-lab explores the characteristics of wires in DC circuits. Keep in mind that an ordinary wire has low but finite resistance. For these questions assume the wire resistance is 0.1 Ohms, the power supply is an ideal 6V voltage source, and the light bulb resistance is 30 Ohms. A. For the circuit below, one such wire is connected directly across the power supply. What is the voltage drop (in V) across the wire? The picture of the circuit is basically a 6V battery only attached to a wire with a R of .1 Ohms. B. Calculate the current (in A) in the wire. C. In the circuit below, a light bulb (30 ohms) is connected to the power supply using two such wires. Calculate th... click for more

Physics - Electronics

Electrical circuits with capacitors and resistances. See attached file for full problem description.

Can we make a transistor by connecting two diodes back to back?

Can we make a transistor by connecting two diodes back to back?

Electric Field & magnitudes

The lines show the equipotential contours in the plane of three point charges, Q1, Q2, and Q3. The values of the potentials are in kV as indicated for the +5, 0, and -5 kV contours. The positions of the charges are indicated by the dots. the work required to move a charge of -0.51×10-12C from i to b is 3.06×10-9 J a: Calculate the size of the electric field at k. b: Calculate the size of the force on a charge of 8.00×10-19 C at g. c: Calculate the size of Q3. The magnitudes of the three charges are in the exact ratios of 1 to 2 to 3.

Four charges placed at the corners of a square. To determine the electric field at the mid point of a side.

Find the magnitude of the electric field at point d. (Data: q= 0.750 mC, L= 0.40 m)