Combination of Resistor

How voltage levels are represented in a digital circuit?

Draw a circuit diagram involving bulb, battery and switches to represent OR gate.

How can we represent analog and digital signals?

Which of these digital circuit or logic gate have their output OFF if both input $1$ and input $2$ are ON.

What are the differences between series and parallel circuit?

What is the purpose of using NAND gates?

Which of the following combination of resistors is called potential divider circuit.

What is potential divider circuit?

Why are $NAND$and $NOR$ universal gates?

What are digital signals?

What are analog signals?

Draw the analog and digital signal and write down the differences between them.

Describe a circuit diagram involving bulb, battery and switches representing $\mathrm{NOT}$ gate.

Describe a circuit diagram involving bulb, battery and switches representing $\mathrm{AND}$ gate.

What are analog and digital signals? Discuss the differences and advantages.

Find the equivalent resistance.

From the given circuit,

1.  Find the potential difference across $7 \mathrm{\Omega }$ resistor.
2. How much amount of current will flow  through the battery?

Find out the following in the electric circuit given.

1. The effective resistance of two parallel resistors.
2. Current flowing through the resistor between A and B.
3. The potential difference across the resistor between A and B.
4. The power dissipated in the resistor between A and B.
5. Is there is any difference between the readings of two ammeters connected? Explain.

A kitchen in North America has three appliances connected to a 120 V circuit with a 15 A circuit breaker: an 850 W coffee maker, a 1200 W microwave oven, and a 900 W toaster.

1. Draw a schematic diagram of this circuit.
2. Which of these appliances can be operated simultaneously without tripping the circuit breaker?

Give circuit symbol, logical operation, truth table, and Boolean expression of AND, OR, NOT, NAND, NOR and EX-OR gates.