WORTH 50 POINTS!!

Solve the following problems using Ohm's law,

1. Calculate the voltage in a circuit with 50 Q and 2 A.

2. Calculate the current in a circuit with 50 V and 25 Q.

3. Calculate the resistance in a circuit with 120 V and 5 A.

4. Calculate the resistance in a circuit with 10 V and 20 mA. To complete this problem, first convert 20 mA to amps.

Use "PIE" formula to solve the following problems:

5. Calculate the power for a circuit with 100 V and 5 A.

6. Calculate the current for a circuit with 1,000 W and 120 V.

7. Calculate the voltage for a circuit with 500 W and 2 A.

Determine the time of the day and month of the year at which the peak sensible cooling load occurs for a top floor, north-eastern corner room of an office building in durban for the following conditions: floor area: 8 x 8 x 3 m east and north walls: 115 mm face brick (outside), 20 mm air space, 115 mm ordinary brick (inside) with 15 mm plaster roof construction: suspended plasterboard ceiling, 450 mm air space, 150 mm concrete, 75mm screed, waterproofing no heat transfer across other surfaces window area 3x 1,5 m high in north wall only. ordinary glass with venetian blinds. lights and occupants : from 07: 00 to 18: 00 average light density: 25 w/m2 number of occupants : 5 seated, light office work room temperature 24°c