Explanation:

In this scenario, A agrees to sell his car worth Rs. 100,000 to B for only Rs. 20,000. However, A's consent to the agreement was obtained by coercion. Let's understand the implications of coercion and how it affects the validity of the agreement.

Coercion:
Coercion is a type of force that compels a person to enter into an agreement against their will. It involves the use of physical force or threat to obtain the consent of the party. In this case, A's consent to sell his car for a significantly lower price than its actual worth was obtained through coercion.

Effect on Agreement:
When consent is obtained through coercion, the agreement becomes voidable. This means that the party whose consent was coerced has the option to either enforce the agreement or reject it. They have the right to set aside the agreement and seek remedies for the coercion.

Voidable Agreement:
A voidable agreement is one that is initially valid and enforceable, but due to certain factors such as coercion, fraud, misrepresentation, undue influence, etc., the party whose consent was affected has the right to avoid or cancel the contract. In this case, A can choose to avoid the agreement as his consent was obtained by coercion.

Remedies:
If A decides to avoid the agreement, he can seek remedies for the coercion. These remedies may include:

1. Rescission: A can request the court to cancel the agreement and restore the parties to their original positions.

2. Damages: A may be entitled to claim damages for any loss or harm suffered as a result of the coercion.

3. Injunction: A can seek an injunction to prevent B from taking possession of the car or selling it to someone else until the matter is resolved.

Conclusion:
In conclusion, the agreement between A and B is voidable as A's consent was obtained by coercion. A has the option to avoid the agreement and seek remedies for the coercion.