A resistor was connected to a variable voltage source and the current was measured for various voltages. The following results were obtained: Trial Voltage (V) Current (mA) 1 0.91 2.8 2 1.98 6.5 3 2.92 9.9 4 4.09 13.8 where V is the voltage difference across the resistor and I is the current travelling through the resistor at the same time. Calculate the resistance for each trial and the average of the resistances. Determine the uncertainty in the average resistance. Report these values below. (When entering units, use ohm for 2.) R = ±

For the circuit below, determine the resistor current. The source is 8 volts, the Zener potential is 5.2 volts and the resistor is 5k ohms.

The resistance of a resistor at 7 degrees Celsius is given as 42 ohms. Determine the resistance, in ohms, of the said resistor at 25 degrees Celsius. The temperature coefficient at 0 degrees Celsius is 0.0086 per Celsius degree.

Question: a.) Find the equivalent resistance between points A and B in the given figure. b.) Calculate the current in each resistor if a terminal voltage of 53V is applied between points a and b.

Notes on the verification of ohm's law by voltage method?

Determine the nodes/junctions, Current (I), Loops, Voltage drop on each Resistor (R), and Power (P) on each Resistor (R) with the following given and illustration: Use the following given for batteries and resistors (color bands for your value of resistors, use the lower limit).  R1 = red red black goldR2 = orange green black silverR3 = white orange black goldR4 = green violet brown goldR5 = violet red black silverR6 = yellow green black silverR7 = brown black black gold V1 (lower left) = 100VV2 (top center) = 150VV3 (lower right) = 200V

The color code of the following is Red-Black-Red-Gold. Solve for a) Resistance nominal value b) Measured Current c) Measured voltage. The multi-tester readings are shown below.

In the figure the ideal batteries have emfs ɛ1 = 20.4 V, ɛ2 = 9.05 V, and ɛ3 = 5.40 V, and the resistances are each 2.40 Q. What are the (a) size and (b) direction (left or right) of current i,? (c) Does battery 1 supply or absorb energy, and (d) what is its power? (e) Does battery 2 supply or absorb energy, and (f) what is its power? (g) Does battery 3 supply or absorb energy, and (h) what is its power? (a) Number i Units (b) (c) (d) Number i Units (e) (f) Number i Units (g) (h) Number i Units

Sketch the graph of the voltage vs time for a 10 V DC voltage

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