Welcome to Series and Parallel Circuits NEET MCQ, In this curated collection of multiple-choice questions (MCQs), each question is thoughtfully accompanied by both the correct answer and a comprehensive explanation. Designed with NEET (National Eligibility-cum-Entrance Test) preparation in mind, these MCQs are here to not only assess your knowledge of series and parallel circuits but also to provide you with a deeper understanding of this fundamental topic.

## 1. In a series circuit, the total resistance (R_total) is:

### Answer:

### Explanation:

In a series circuit, the total resistance is the sum of all the individual resistances.

## 2. In a parallel circuit, how does the voltage across each component compare?

### Answer:

### Explanation:

In a parallel circuit, the voltage drop across each component is the same as the source voltage.

## 3. In a series circuit, if one component fails:

### Answer:

### Explanation:

In a series circuit, all components are connected in a single loop. If one fails, the entire circuit is broken.

## 4. In a parallel circuit, the total capacitance (C_total) is:

### Answer:

### Explanation:

In a parallel circuit, capacitors simply add up to give the total capacitance.

## 5. In a series circuit, the current:

### Answer:

### Explanation:

In a series circuit, the current remains consistent throughout all components.

## 6. Power dissipation in resistors is directly proportional to:

### Answer:

### Explanation:

Power (P) = V * I, so power dissipation is directly proportional to both current and voltage.

## 7. In a parallel circuit, if one component fails:

### Answer:

### Explanation:

In a parallel circuit, each component operates independently. If one fails, others continue working.

## 8. In a series RC circuit, the sum of the individual voltages across the resistor (V_R) and capacitor (V_C) is:

### Answer:

### Explanation:

According to Kirchhoff's voltage law, in a series circuit, the sum of the voltages across each component is equal to the source voltage.

## 9. Resistors are added to circuits to:

### Answer:

### Explanation:

Resistors are primarily used to limit or control the current flow in a circuit.

## 10. In a parallel RL circuit, the total current is:

### Answer:

### Explanation:

In a parallel RL circuit, currents through individual components are out of phase, hence their total is the vector sum.

## 11. The reciprocal of resistance is called:

### Answer:

### Explanation:

Conductance, denoted by 'G', is the reciprocal of resistance and measures how easily electricity flows through a component.

## 12. In a parallel circuit, the total resistance is:

### Answer:

### Explanation:

For parallel circuits, the reciprocal of total resistance is the sum of reciprocals of individual resistances.

## 13. The total reactance in a series LC circuit is:

### Answer:

### Explanation:

In a series LC circuit, the total reactance is the difference between inductive and capacitive reactance due to opposite phase angles.

## 14. In a series circuit with unequal resistances, the power dissipation is highest in the:

### Answer:

### Explanation:

Power dissipation in a resistor is P = I^2 * R. In a series circuit, current remains constant. Hence, power is directly proportional to resistance.

## 15. In a parallel circuit, resistors dissipate power. The total power dissipated in the circuit is the:

### Answer:

### Explanation:

Total power in a parallel circuit is the sum of power dissipated across each component.