What is a covered call strategy and when is it used?

Since covered call opens risk on the downside, is it possible to do a covered call with limited risk on the downside?

Can I create a covered call strategy when I am bullish on the stock?

Is there a Call and Trade Facility when network connections are down?

What are Covered call options and naked call options and when to use them?

How does a bull call spread work and when can I use this strategy?

What happens to the value of the call and put options under Black & Scholes when the strike price goes down or shifts down?

What happens to the value of the call and put options under Black & Scholes when the volatility of the stock goes down or moves down?

What happens to the value of the call and put options under Black & Scholes when the time to expiry of the stock goes down or moves down?

What happens to the value of the call and put options under Black & Scholes when the interest rates in the economy move down due to RBI repo rate cut?

What happens to the value of the call and put options under Black & Scholes when the dividend yields on the index move down due to a cut in the dividend rates?