First National Of Maryland plans to move its credit card operations to Delaware, a move that Maryland Bankers Association lobbyist William Weaver said last week is necessary because the bank cannot make money on its operations in Maryland.

Weaver told House and Senate committees Tuesday in Annapolis that the bank has been losing as much as $3 million a year on its credit card operations and expects to find a more favorable atmosphere for banking in Maryland's neighbor to the east, which is working on changes in banking laws to facilitate such out-of-state operations.

However, Del. Steven Sklar (D-Baltimore), a sponsor of legislation to place more controls on the interest and fees that banks charge, called Weaver's remarks "a form of extortion."

He said it was an implied threat that banks would leave Maryland if the legislature enacted bills such as his, which would automatically roll back current 18 percent interest ceilings to 12 percent in July 1982.

In a vitriolic statement, Sklar also accused Maryland bankers of greed, of "bamboozling" the General Assembly last year and of making Gov. Harry Hughes "a sap in absentia" by proposing -- just days after Hughs had left the country last year -- to charge credit card customers membership fees. Attorney General Stephen Sachs has ruled that the fees are illegal, and the issue is before the courts.

Sklar leveled the charges before the House Economic Matters Committee, which was hearing testimony on bills to limit the interest banks may charge on consumer loans or restrict their ability to levy the membership fees on credit card accounts.

Weaver, representing the Maryland Bankers Association, said First National's decision to move its credit card operations to Delaware could cost the state 300 to 1,000 jobs, and said other banks may follow suit.

To that, Del. William Burkhead (D-Anne Arundel), a member of the House committee, replied, "As far as I'm concerned, if they feel that way, let them get the hell out of the state."

Weaver said banks lose money on credit cards because 40 to 45 percent of the cardholders pay their bills on time, avoiding interest charges.

"It's the people out there who can't afford to pay on time that are, in effect, carrying people like you and me along for the ride," he said.

But Burkhead said, "If they aren't making money on (credit card operations), then I don't understand why they don't stop it."

This week's business-related committee hearings in the Maryland and Virginia General Assemblies: MARYLAND SENATE

Tuesday: Economic Affairs Committee meets at 10 a.m. in Room 200, James Office Building to consider various insurance-related legislation.

Wednesday: Economic Affairs Committee meets at 10 a.m. in Room 200, James Office Building to consider legislation on state industrial financing. j

Thursday: Economic Affairs Committee holds hearings on consumer protection legislation, 10 a.m., Room 200, James Office Building.

Judicial Proceeding Committee meets at 10 a.m. to consider bills relating to precious metals dealers and the sale of precious metals.

Friday: Economic Affairs Committee meets at 10 a.m. in Room 200, James Office Building to consider legislation on credit union charters and transaction accounts. MARYLAND HOUSE Tuesday: Economic Matters Committee meets at 1 p.m. in Room 150, Lowe Office Building, to consider legislation on new car warranties, unsafe tires and other auto-related bills.

Wednesday: Economic Matters Committee meets at 1 p.m. in Room 150, Lowe Office Building, to consider bills relating to real estate discrimination.

Ways and Means Committee meets at 1:30 p.m. in Room 110, Lowe Office Building to consider various tax legislation.

Task Force to Study State-Local Fiscal Relationships meets at 4 p.m., Joint Hearing Room, Legislative Services Building to receive and act upon reports from the Task Force subcommittees.

Thursday: Economic Matters Committee holds hearings on legislation concerning display of gasoline prices, lie detector test information on prospective employes and burlar alarm dealers. VIRGINIA SENATE (Standing Committees)

Monday: Agriculture, Conservation and Natural Resources Committee, 9 a.m., Senate Room A, General Assembly Bldg.

Commerce and Labor Committee, 2 p.m., Senate Room B, General Assembly Bldg.

Tuesday: Finance Committee, 10 a.m., Senate Room B, General Assembly Bldg.

Wednesday: Finance Committee, 10 a.m., Senate Room B, General Assembly Bldg.

Thursday: Transporation Committee, 2 p.m., Senate Room B, General Assembly Bldg. VIRGINIA HOUSE (Standing Committees)

Monday: Finance Committee, one half hour after adjournment, Room D, General Assembly Bldg.

Appropriations Committee, Monday through Friday, 45 minutes after adjournment, Appropriations Room, General Assembly Bldg.

Tuesday: Corporations, Insurance and Banking Committee, 10 a.m., Room 4, Capitol.

Health, Welfare and Institutions Committee, 9:30 a.m., Room C, General Assembly Bldg.

Wednesday: Agriculture Committee, 3 p.m., Room 2, Capitol.

Conservation and Natural Resources Committee, 10 a.m., Room 4, Capitol.

Finance Committee, one half hour after adjournment, Room D, General Assembly Bldg.

Labor and Commerce Committee, 10 a.m., Room 2, Capitol.

Thursday: Corporations, Insurance and Banking Committee, 10 a.m., Room 4, Capitol.

Health, Welfare and Institutions, 9:30 a.m., Room C, Capitol.