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WorksheetsOhms, Power and Kirchhoff's Law
Total questions: 14
Worksheet time: 40mins
Ohm's Law
Formula used to calculate the relationship between voltage, current and resistance in a circuit
KCL
the algebraic sum of all currents entering and exiting a node must equal zero
Node
a point where several wires electrically connect
KVL
The algebraic sum of all voltages in a loop must equal zero
Branches
lines with devices connecting two nodes
What is the KCL equation for Node A?
I₁ - I₂ - I₃ = 0
-I₁ - I₂ - I₃ = 0
I₁ + I₂ + I₃ = 0
I₁ + I₂ - I₃ = 0
What is the KVL Equation for Loop 1
-Vs + V₁ + ₂ = 0
-V₂ + V₃ + V₄ = 0
Vs + V₁ - ₂ = 0
V₂ - V₃ - V₄ = 0
What is the KVL Equation for Loop 2
-Vs + V₁ + ₂ = 0
-V₂ + V₃ + V₄ = 0
Vs + V₁ - ₂ = 0
V₂ - V₃ - V₄ = 0
Calculate V4 given the following:
Vs = 15V, V1 = 3.5V, V3 = 5V
(a)
Calculate R4 given the following:
Vs = 9V, V₁ = 2V, V₃ = 4V, I₄ = 3mA
Type answer in SI Notation
(a)
Find the resistance of a circuit that draws 25m amperes with 15 volts applied. Type your answer in Standard notation
R = 600Ω
R = 6mΩ
R = 6000Ω
R = 1.66 Ω
Calculate the power rating of a home appliance that uses 5 amps of current when plugged into a 220-volt outlet. Type answer in SI notation
(a)
A light bulb has a resistance of 6k Ω and a maximum
current of 3m A. How much voltage can be applied
before the bulb will break?
(a)
A 12 V car battery pushes charge through the
headlight circuit resistance of 1.5k Ω. How much
current is passing through the circuit? Type your answer in SI notation
(a)
Convert the standard notation number below to engineering notation
2500
(a)
Calculate the amount of power dissipated by this electric heating element, if the generator's output voltage is 110 volts and the heater's resistance is 2.5 ohms:
(a)
Convert the following number to standard notation
16k
(a)
Convert the following to SI notation
0.005
(a)
