1.1.1.4 Worksheet - Ohms Law f3h4t

IT Essentia als 5.0

1 1.1.1.4 Worksheett - Ohm’s Law P Print and com mplete this worksheet. heet, you will answer a questtions based on Electricity a and Ohm’s La aw. Show all ssteps when solving In this worksh p problems. N Note: The amounts used in n these proble ems may not be realistic. 1 1. What are the four basic c units of elec ctricity? Provide the variab ble name and symbol, and unit name an nd symbol. Voltage (V) is measured in volts (V). Current (I) is measured in amperes (A). Resistance (R) is measured in ohms (Ω). Power (P) is measured in watts (W).

2 2. Write the equation for Ohm’s O Law. V=IR

3 3. Re-arrang ge the Ohm’s Law equation n to solve the e following: I = V/R

R = V/I

4 4. Power is equal e to volta age times currrent. Add the missing inforrmation in eacch of the following power e equations. P=V I

P = R I^2

P = V2 /2

5 5. The yellow w wire connec cted to a pow wer supply carrries 12V. If th he power sup pply provides 60W of powe er to the yellow wirre, how much current is pa assing through h the yellow w wire? 5 amps

are 0.025 ohm 6 6. There are e 3.3V ing g through an orange powe er supply cabl e, and there a ms of resistan nce in the orange wiire. How much power is su upplied to the orange wire by the powerr supply? 435.6 watts

7 7. A wire from the power supply is carrrying 120W of o power and 2 24A of curren nt. Which colo or(s) of cable is the wire? Red

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